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Efficacy and Safety of the Combined Oral Contraceptive (COC) NOMAC-E2 Compared to a COC Containing DRSP/EE (292001)(COMPLETED)(P05724)

A Randomized, Open-Label, Comparative, Multi -Center Trial to Evaluate Contraceptive Efficacy, Cycle Control, Safety and Acceptability of a Monophasic Combined Oral Contraceptive (COC) Containing 2.5 mg Nomegestrol Acetate (NOMAC) and 1.5 mg Estradiol (E2), Compared to a Monophasic COC Containing 3 mg Drospirenone (DRSP) and 30 µg Ethinyl Estradiol (EE)

Status
Completed
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00511199
Enrollment
2152
Registered
2007-08-03
Start date
2006-05-01
Completion date
2008-04-01
Last updated
2022-02-09

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Contraception

Brief summary

The primary purpose of this study is to assess contraceptive efficacy, vaginal bleeding patterns (cycle control), general safety and acceptability of the nomegestrol acetate-estradiol (NOMAC-E2) combined oral contraceptive (COC) in a large group of women aged 18-50 years.

Interventions

Nomegestrol Acetate and Estradiol Tablets, 2.5 mg NOMAC and 1.5 mg E2 taken once daily from Day 1 of menstrual period up to and including Day 28 for 13 consecutive 28-day menstrual cycles (1 year).

Drospirenone and Ethinyl Estradiol Tablets, 3 mg DRSP and 30 mcg EE taken once daily from Day 1 of menstrual period up to and including Day 28 for 13 consecutive 28-day menstrual cycles (1 year).

Sponsors

Organon and Co
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
PREVENTION
Masking
NONE

Eligibility

Sex/Gender
FEMALE
Age
18 Years to 50 Years
Healthy volunteers
Yes

Inclusion criteria

* Sexually active women, at risk for pregnancy and not planning to use condoms. * Women in need for contraception and willing to use an oral contraceptive (OC) for 12 months (13 cycles). * At least 18 but not older than 50 years of age at the time of screening. * Body mass index (BMI) of \>/= 17 and \</= 35. * Good physical and mental health. * Willing to give informed consent in writing.

Exclusion criteria

* Contraindications for contraceptive steroids. * In accordance with the Summary of Product Characteristics (SmPC)/Package Insert of DRSP-EE, additional contraindications related to the antimineralocorticoid activity of drospirenone (conditions that predispose to hyperkalemia): * Renal insufficiency * Hepatic dysfunction * Adrenal insufficiency * An abnormal cervical smear (i.e.: dysplasia, cervical intraepithelial neoplasia \[CIN\], Squamous Intraepithelial Lesion \[SIL\], carcinoma in situ, invasive carcinoma) at screening. * Clinically relevant abnormal laboratory result at screening as judged by the investigator. * Use of an injectable hormonal method of contraception; within 6 months of an injection with a 3-month duration, within 4 months of an injection with a 2-month duration, within 2 months of an injection with a 1-month duration. * Before spontaneous menstruation has occurred following a delivery or abortion. * Breastfeeding or within 2 months after stopping breastfeeding prior to the start of trial medication. * Present use or use within 2 months prior to the start of the trial medication of the following drugs: phenytoin, barbiturates, primidone, carbamazepine, oxcarbazepine, topiramate, felbamate, rifampicin, nelfinavir, ritonavir, griseofulvin, ketoconazole, sex steroids (other than pre- and posttreatment contraceptive method) and herbal remedies containing Hypericum perforatum (St John's Wort). * Administration of investigational drugs and/or participation in another clinical trial within 2 months prior to the start of the trial medication or during the trial period.

Design outcomes

Primary

MeasureTime frameDescription
Number of In-treatment Pregnancies (With +2 Day Window) Per 100 Woman Years of Exposure (Pearl Index)1 year (13 cycles)In-treatment pregnancies were pregnancies with an estimated date of conception from the day of first intake of trial medication up to and including the day of last (active or placebo) intake of trial medication extended with a maximum of two days. Each 13 cycles (28 days per cycle) of exposure constitutes a woman year. The Pearl Index was obtained by dividing the number of in-treatment pregnancies that occurred by the time (in 100 women years) that the women were under risk of becoming pregnant.
Number of In-treatment Pregnancies (With +14 Day Window) Per 100 Woman Years of Exposure (Pearl Index)1 year (13 cycles)In-treatment pregnancies were pregnancies with an estimated date of conception from the day of first intake of trial medication up to and including the day of last (active or placebo) intake of trial medication extended with a period of 14 days. Each 13 cycles (28 days per cycle) of exposure constitutes a woman year. The Pearl Index was obtained by dividing the number of in-treatment pregnancies that occurred by the time (in 100 women years) that the women were under risk of becoming pregnant.

Secondary

MeasureTime frameDescription
Number of Participants With an Occurrence of Breakthrough BleedingEvery 28-day cycle for 13 cycles (one year total)Cycle control was evaluated on the basis of vaginal bleeding pattern as recorded daily by participants using e-diaries. Participants documented whether vaginal bleeding was present, and if present, indicated whether it was considered to be spotting or bleeding. Breakthrough bleeding was defined as any bleeding episode that occurred during the expected non-bleeding period that was neither part of an early nor continued withdrawal bleeding. Expected non-bleeding period: LNG-EE group: 21-day period starting on Day 1 of the cycle; NOMAC-E2: 21-day period starting on Day 4 of the cycle.
Number of Participants With an Occurrence of Breakthrough Spotting (Spotting Only)Every 28-day cycle for 13 cycles (one year total)Cycle control was evaluated on the basis of vaginal bleeding pattern as recorded daily by participants using e-diaries. Participants documented whether vaginal bleeding was present, and if present, indicated whether it was considered to be spotting or bleeding. Breakthrough spotting was defined as any spotting episode that occurred during the expected non-bleeding period that was neither part of an early nor continued withdrawal bleeding. Expected non-bleeding period: DRSP-EE group: 21-day period starting on Day 1 of the cycle; NOMAC-E2: 21-day period starting on Day 4 of the cycle.
Number of Participants With an Occurrence of Early Withdrawal BleedingEvery 28-day cycle for 13 cycles (one year total)Cycle control was evaluated on the basis of vaginal bleeding pattern as recorded daily by participants using e-diaries. Participants documented whether vaginal bleeding was present, and if present, indicated whether it was considered to be spotting or bleeding. Early withdrawal bleeding was defined as any withdrawal bleeding that started before the current expected bleeding period. Expected bleeding period: DRSP-EE group: 7-day period starting on Day 22 of the cycle; NOMAC-E2: 7-day period starting on Day 25 of the cycle and ending on Day 3 of the next cycle.
Number of Participants With an Occurrence of Breakthrough Bleeding/SpottingEvery 28-day cycle for 13 cycles (one year total)Cycle control was evaluated on the basis of vaginal bleeding pattern as recorded daily by participants using e-diaries. Participants documented whether vaginal bleeding was present, and if present, indicated whether it was considered to be spotting or bleeding. Breakthrough bleeding/spotting was defined as any episode that occurred during the expected non-bleeding period that was neither an early nor a continued withdrawal bleeding. Expected non-bleeding period: DRSP-EE group: 21-day period starting on Day 1 of the cycle; NOMAC-E2: 21-day period starting on Day 4 of the cycle.
Average Number of Breakthrough Bleeding/Spotting DaysEvery 28-day cycle for 13 cycles (one year total)Cycle control was evaluated on the basis of vaginal bleeding pattern as recorded daily by participants using e-diaries. Participants documented whether vaginal bleeding was present, and if present, indicated whether it was considered to be spotting or bleeding. Breakthrough bleeding/spotting was defined as any episode that occurred during the expected non-bleeding period that was neither an early nor a continued withdrawal bleeding. Expected non-bleeding period: DRSP-EE group: 21-day period starting on Day 1 of the cycle; NOMAC-E2: 21-day period starting on Day 4 of the cycle.
Average Number of Withdrawal Bleeding/Spotting DaysEvery 28-day cycle for 13 cycles (one year total)Cycle control was evaluated on the basis of vaginal bleeding pattern as recorded daily by participants using e-diaries. Participants documented whether vaginal bleeding was present, and if present, indicated whether it was considered to be spotting or bleeding. Withdrawal bleeding was defined as bleeding/spotting episode that started during or continued into the expected bleeding period. Expected bleeding period: DRSP-EE group: 7-day period starting on Day 22 of the cycle; NOMAC-E2: 7-day period starting on Day 25 of the cycle and ending on Day 3 of the next cycle.
Number of Participants With an Occurrence of Continued Withdrawal BleedingEvery 28-day cycle for 12 cyclesCycle control was evaluated on the basis of vaginal bleeding pattern as recorded daily by participants using e-diaries. Participants documented whether vaginal bleeding was present, and if present, indicated whether it was considered to be spotting or bleeding. Continued withdrawal bleeding was defined as any withdrawal bleeding that continued into the expected non-bleeding period of the next cycle. Expected non-bleeding period: DRSP-EE group: 21-day period starting on Day 1 of the cycle; NOMAC-E2: 21-day period starting on Day 4 of the cycle.
Number of Participants With an Occurrence of Absence of Withdrawal BleedingEvery 28-day cycle for 13 cycles (one year total)Cycle control was evaluated on the basis of vaginal bleeding pattern as recorded daily by participants using e-diaries. Participants documented whether vaginal bleeding was present, and if present, indicated whether it was considered to be spotting or bleeding. Absence of withdrawal bleeding was defined as no bleeding/spotting episode that began during or continued into the expected bleeding period. Expected bleeding period: DRSP-EE group: 7-day period starting on Day 22 of the cycle; NOMAC-E2: 7-day period starting on Day 25 of the cycle and ending on Day 3 of the next cycle.

Participant flow

Recruitment details

This study recruited participants from Europe, Asia and Australia.

Pre-assignment details

In total, 2152 subjects were randomized, of which 1613 subjects to NOMAC-E2 and 539 subjects to DRSP-EE. A total of 2126 subjects were randomized and treated, of which 1591 subjects on NOMAC-E2 and 535 subjects on DRSP-EE.

Participants by arm

ArmCount
NOMAC-E2
Monophasic combined oral contraceptive (COC) tablets containing 2.5 mg Nomegestrol Acetate (NOMAC) and 1.5 mg Estradiol (E2) taken once daily from Day 1 of menstrual period up to and including Day 28 (Days 1-24, active tablets; Days 25-28, placebo tablets) for 13 consecutive 28-day menstrual cycles (1 year).
1,591
DRSP-EE
Monophasic COC tablets containing 3 mg Drospirenone (DRSP) and 30 mcg Ethinyl Estradiol (EE) taken once daily from Day 1 of menstrual period up to and including Day 28 (Days 1-21, active tablets; Days 22-28, placebo tablets) for 13 consecutive 28-day menstrual cycles (1 year).
535
Total2,126

Withdrawals & dropouts

PeriodReasonFG000FG001
Overall StudyLost to Follow-up4017
Overall StudyOther Adverse Event (AE)/ Serious AE22752
Overall StudyOther Reason7837
Overall StudyPregnancy63
Overall StudyPregnancy Wish168
Overall StudyUnacceptable Vaginal Bleeding634
Overall StudyWithdrawal of Informed Consent194

Baseline characteristics

CharacteristicNOMAC-E2DRSP-EETotal
Age, Continuous28.1 years
STANDARD_DEVIATION 7
27.6 years
STANDARD_DEVIATION 7
28.0 years
STANDARD_DEVIATION 7
Sex: Female, Male
Female
1591 Participants535 Participants2126 Participants
Sex: Female, Male
Male
0 Participants0 Participants0 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
— / —— / —
other
Total, other adverse events
849 / 1,591242 / 535
serious
Total, serious adverse events
38 / 1,59113 / 535

Outcome results

Primary

Number of In-treatment Pregnancies (With +14 Day Window) Per 100 Woman Years of Exposure (Pearl Index)

In-treatment pregnancies were pregnancies with an estimated date of conception from the day of first intake of trial medication up to and including the day of last (active or placebo) intake of trial medication extended with a period of 14 days. Each 13 cycles (28 days per cycle) of exposure constitutes a woman year. The Pearl Index was obtained by dividing the number of in-treatment pregnancies that occurred by the time (in 100 women years) that the women were under risk of becoming pregnant.

Time frame: 1 year (13 cycles)

Population: Restricted ITT set included all participants treated except for 2 nonpregnant participants whose exposure was excluded due to limited credibility of diary data \& also excluded nonpregnant participants without \>= 1 cycle expected to be at risk for pregnancy (with recorded use of condoms or w/o confirmed sexual intercourse, based on e-diary data).

ArmMeasureGroupValue (NUMBER)
NOMAC-E2Number of In-treatment Pregnancies (With +14 Day Window) Per 100 Woman Years of Exposure (Pearl Index)Overall group0.817 Pregnancies per 100 woman years
NOMAC-E2Number of In-treatment Pregnancies (With +14 Day Window) Per 100 Woman Years of Exposure (Pearl Index)=<35 years old (n=1193; n=402)0.999 Pregnancies per 100 woman years
NOMAC-E2Number of In-treatment Pregnancies (With +14 Day Window) Per 100 Woman Years of Exposure (Pearl Index)>35 years old (n=249; n=84)0.000 Pregnancies per 100 woman years
DRSP-EENumber of In-treatment Pregnancies (With +14 Day Window) Per 100 Woman Years of Exposure (Pearl Index)Overall group1.356 Pregnancies per 100 woman years
DRSP-EENumber of In-treatment Pregnancies (With +14 Day Window) Per 100 Woman Years of Exposure (Pearl Index)=<35 years old (n=1193; n=402)1.682 Pregnancies per 100 woman years
DRSP-EENumber of In-treatment Pregnancies (With +14 Day Window) Per 100 Woman Years of Exposure (Pearl Index)>35 years old (n=249; n=84)0.000 Pregnancies per 100 woman years
Primary

Number of In-treatment Pregnancies (With +2 Day Window) Per 100 Woman Years of Exposure (Pearl Index)

In-treatment pregnancies were pregnancies with an estimated date of conception from the day of first intake of trial medication up to and including the day of last (active or placebo) intake of trial medication extended with a maximum of two days. Each 13 cycles (28 days per cycle) of exposure constitutes a woman year. The Pearl Index was obtained by dividing the number of in-treatment pregnancies that occurred by the time (in 100 women years) that the women were under risk of becoming pregnant.

Time frame: 1 year (13 cycles)

Population: Restricted ITT set included all participants treated except for 2 nonpregnant participants whose exposure was excluded due to limited credibility of diary data \& also excluded nonpregnant participants without \>= 1 cycle expected to be at risk for pregnancy (with recorded use of condoms or w/o confirmed sexual intercourse, based on e-diary data).

ArmMeasureGroupValue (NUMBER)
NOMAC-E2Number of In-treatment Pregnancies (With +2 Day Window) Per 100 Woman Years of Exposure (Pearl Index)Overall group0.467 Pregnancies per 100 woman years
NOMAC-E2Number of In-treatment Pregnancies (With +2 Day Window) Per 100 Woman Years of Exposure (Pearl Index)=<35 years old (n= 1193; n=402)0.571 Pregnancies per 100 woman years
NOMAC-E2Number of In-treatment Pregnancies (With +2 Day Window) Per 100 Woman Years of Exposure (Pearl Index)>35 years old (n= 249; n=84)0.000 Pregnancies per 100 woman years
DRSP-EENumber of In-treatment Pregnancies (With +2 Day Window) Per 100 Woman Years of Exposure (Pearl Index)Overall group1.017 Pregnancies per 100 woman years
DRSP-EENumber of In-treatment Pregnancies (With +2 Day Window) Per 100 Woman Years of Exposure (Pearl Index)=<35 years old (n= 1193; n=402)1.261 Pregnancies per 100 woman years
DRSP-EENumber of In-treatment Pregnancies (With +2 Day Window) Per 100 Woman Years of Exposure (Pearl Index)>35 years old (n= 249; n=84)0.000 Pregnancies per 100 woman years
Secondary

Average Number of Breakthrough Bleeding/Spotting Days

Cycle control was evaluated on the basis of vaginal bleeding pattern as recorded daily by participants using e-diaries. Participants documented whether vaginal bleeding was present, and if present, indicated whether it was considered to be spotting or bleeding. Breakthrough bleeding/spotting was defined as any episode that occurred during the expected non-bleeding period that was neither an early nor a continued withdrawal bleeding. Expected non-bleeding period: DRSP-EE group: 21-day period starting on Day 1 of the cycle; NOMAC-E2: 21-day period starting on Day 4 of the cycle.

Time frame: Every 28-day cycle for 13 cycles (one year total)

Population: ITT analyses of vaginal bleeding patterns were based on all participants in the ITT group who had at least one evaluable cycle. Cycles were considered to be non-evaluable in case of insufficient bleeding data or improper cycle length.~n= number of participants who had breakthrough bleeding/spotting for the respective cycle.

ArmMeasureGroupValue (MEAN)Dispersion
NOMAC-E2Average Number of Breakthrough Bleeding/Spotting DaysCycle 13 (n=94 NOMAC-E2; n=33 DRSP-EE)2.7 daysStandard Deviation 2
NOMAC-E2Average Number of Breakthrough Bleeding/Spotting DaysCycle 5 (n=221 NOMAC-E2; n=62 DRSP-EE)3.2 daysStandard Deviation 2.5
NOMAC-E2Average Number of Breakthrough Bleeding/Spotting DaysCycle 2 (n=289 NOMAC-E2; n=75 DRSP-EE)3.5 daysStandard Deviation 2.8
NOMAC-E2Average Number of Breakthrough Bleeding/Spotting DaysCycle 6 (n=182 NOMAC-E2; n=53 DRSP-EE)3.3 daysStandard Deviation 2.5
NOMAC-E2Average Number of Breakthrough Bleeding/Spotting DaysCycle 3 (n=297 NOMAC-E2; n=54 DRSP-EE)3.4 daysStandard Deviation 2.6
NOMAC-E2Average Number of Breakthrough Bleeding/Spotting DaysCycle 7 (n=165 NOMAC-E2; n=45 DRSP-EE)3.2 daysStandard Deviation 2.5
NOMAC-E2Average Number of Breakthrough Bleeding/Spotting DaysCycle 12 (n=110 NOMAC-E2; n=30 DRSP-EE)3.1 daysStandard Deviation 2.2
NOMAC-E2Average Number of Breakthrough Bleeding/Spotting DaysCycle 8 (n=127 NOMAC-E2; n=47 DRSP-EE)3.1 daysStandard Deviation 2.4
NOMAC-E2Average Number of Breakthrough Bleeding/Spotting DaysCycle 11 (n=125 NOMAC-E2; n=29 DRSP-EE)2.8 daysStandard Deviation 2.4
NOMAC-E2Average Number of Breakthrough Bleeding/Spotting DaysCycle 9 (n=129 NOMAC-E2; n=47 DRSP-EE)3.4 daysStandard Deviation 2.6
NOMAC-E2Average Number of Breakthrough Bleeding/Spotting DaysCycle 4 (n=231 NOMAC-E2; n=59 DRSP-EE)3.1 daysStandard Deviation 2.5
NOMAC-E2Average Number of Breakthrough Bleeding/Spotting DaysCycle 10 (n=121 NOMAC-E2; n=32 DRSP-EE)3.1 daysStandard Deviation 2.5
NOMAC-E2Average Number of Breakthrough Bleeding/Spotting DaysCycle 1 (n=483 NOMAC-E2; n=130 DRSP-EE)4.6 daysStandard Deviation 3.6
DRSP-EEAverage Number of Breakthrough Bleeding/Spotting DaysCycle 10 (n=121 NOMAC-E2; n=32 DRSP-EE)3.1 daysStandard Deviation 2.6
DRSP-EEAverage Number of Breakthrough Bleeding/Spotting DaysCycle 1 (n=483 NOMAC-E2; n=130 DRSP-EE)4.2 daysStandard Deviation 3
DRSP-EEAverage Number of Breakthrough Bleeding/Spotting DaysCycle 11 (n=125 NOMAC-E2; n=29 DRSP-EE)2.6 daysStandard Deviation 2.5
DRSP-EEAverage Number of Breakthrough Bleeding/Spotting DaysCycle 12 (n=110 NOMAC-E2; n=30 DRSP-EE)2.6 daysStandard Deviation 2.3
DRSP-EEAverage Number of Breakthrough Bleeding/Spotting DaysCycle 2 (n=289 NOMAC-E2; n=75 DRSP-EE)3.2 daysStandard Deviation 2.5
DRSP-EEAverage Number of Breakthrough Bleeding/Spotting DaysCycle 3 (n=297 NOMAC-E2; n=54 DRSP-EE)3.6 daysStandard Deviation 2.8
DRSP-EEAverage Number of Breakthrough Bleeding/Spotting DaysCycle 13 (n=94 NOMAC-E2; n=33 DRSP-EE)3.2 daysStandard Deviation 2.6
DRSP-EEAverage Number of Breakthrough Bleeding/Spotting DaysCycle 4 (n=231 NOMAC-E2; n=59 DRSP-EE)2.9 daysStandard Deviation 2.5
DRSP-EEAverage Number of Breakthrough Bleeding/Spotting DaysCycle 5 (n=221 NOMAC-E2; n=62 DRSP-EE)2.9 daysStandard Deviation 2.8
DRSP-EEAverage Number of Breakthrough Bleeding/Spotting DaysCycle 6 (n=182 NOMAC-E2; n=53 DRSP-EE)2.4 daysStandard Deviation 2
DRSP-EEAverage Number of Breakthrough Bleeding/Spotting DaysCycle 7 (n=165 NOMAC-E2; n=45 DRSP-EE)3.0 daysStandard Deviation 2.8
DRSP-EEAverage Number of Breakthrough Bleeding/Spotting DaysCycle 8 (n=127 NOMAC-E2; n=47 DRSP-EE)2.7 daysStandard Deviation 1.9
DRSP-EEAverage Number of Breakthrough Bleeding/Spotting DaysCycle 9 (n=129 NOMAC-E2; n=47 DRSP-EE)2.6 daysStandard Deviation 2.2
Secondary

Average Number of Withdrawal Bleeding/Spotting Days

Cycle control was evaluated on the basis of vaginal bleeding pattern as recorded daily by participants using e-diaries. Participants documented whether vaginal bleeding was present, and if present, indicated whether it was considered to be spotting or bleeding. Withdrawal bleeding was defined as bleeding/spotting episode that started during or continued into the expected bleeding period. Expected bleeding period: DRSP-EE group: 7-day period starting on Day 22 of the cycle; NOMAC-E2: 7-day period starting on Day 25 of the cycle and ending on Day 3 of the next cycle.

Time frame: Every 28-day cycle for 13 cycles (one year total)

Population: ITT analyses of vaginal bleeding patterns were based on all participants in the ITT group who had at least one evaluable cycle. Cycles were considered to be non-evaluable in case of insufficient bleeding data or improper cycle length.~n= number of participants who had withdrawal bleeding/spotting for the respective cycle.

ArmMeasureGroupValue (MEAN)Dispersion
NOMAC-E2Average Number of Withdrawal Bleeding/Spotting DaysCycle 7 (n=686 NOMAC-E2; n=309 DRSP-EE)5.8 daysStandard Deviation 22.4
NOMAC-E2Average Number of Withdrawal Bleeding/Spotting DaysCycle 4 (n=891 NOMAC-E2; n=369 DRSP-EE)6.0 daysStandard Deviation 19.9
NOMAC-E2Average Number of Withdrawal Bleeding/Spotting DaysCycle 8 (n=639 NOMAC-E2; n=289 DRSP-EE)5.6 daysStandard Deviation 22.3
NOMAC-E2Average Number of Withdrawal Bleeding/Spotting DaysCycle 1 (n=1182 NOMAC-E2; n=456 DRSP-EE)5.7 daysStandard Deviation 11.2
NOMAC-E2Average Number of Withdrawal Bleeding/Spotting DaysCycle 9 (n=616 NOMAC-E2; n=282 DRSP-EE)5.7 daysStandard Deviation 21.9
NOMAC-E2Average Number of Withdrawal Bleeding/Spotting DaysCycle 5 (n=819 NOMAC-E2; n=351 DRSP-EE)6.0 daysStandard Deviation 20.8
NOMAC-E2Average Number of Withdrawal Bleeding/Spotting DaysCycle 10 (n=564 NOMAC-E2; n=259 DRSP-EE)5.7 daysStandard Deviation 23.5
NOMAC-E2Average Number of Withdrawal Bleeding/Spotting DaysCycle 3 (n=975 NOMAC-E2; n=380 DRSP-EE)5.9 daysStandard Deviation 19
NOMAC-E2Average Number of Withdrawal Bleeding/Spotting DaysCycle 11 (n=538 NOMAC-E2; n=260 DRSP-EE)6.0 daysStandard Deviation 24.1
NOMAC-E2Average Number of Withdrawal Bleeding/Spotting DaysCycle 12 (n=516 NOMAC-E2; n=247 DRSP-EE)5.6 daysStandard Deviation 21.3
NOMAC-E2Average Number of Withdrawal Bleeding/Spotting DaysCycle 6 (n=733 NOMAC-E2; n=339 DRSP-EE)5.8 daysStandard Deviation 21.8
NOMAC-E2Average Number of Withdrawal Bleeding/Spotting DaysCycle 13 (n=387 NOMAC-E2; n=227 DRSP-EE)4.9 daysStandard Deviation 23.9
NOMAC-E2Average Number of Withdrawal Bleeding/Spotting DaysCycle 2 (n=1102 NOMAC-E2; n=423 DRSP-EE)5.6 daysStandard Deviation 15.1
DRSP-EEAverage Number of Withdrawal Bleeding/Spotting DaysCycle 13 (n=387 NOMAC-E2; n=227 DRSP-EE)4.2 daysStandard Deviation 3.8
DRSP-EEAverage Number of Withdrawal Bleeding/Spotting DaysCycle 1 (n=1182 NOMAC-E2; n=456 DRSP-EE)6.0 daysStandard Deviation 3.3
DRSP-EEAverage Number of Withdrawal Bleeding/Spotting DaysCycle 2 (n=1102 NOMAC-E2; n=423 DRSP-EE)5.5 daysStandard Deviation 2.2
DRSP-EEAverage Number of Withdrawal Bleeding/Spotting DaysCycle 3 (n=975 NOMAC-E2; n=380 DRSP-EE)5.4 daysStandard Deviation 2.4
DRSP-EEAverage Number of Withdrawal Bleeding/Spotting DaysCycle 4 (n=891 NOMAC-E2; n=369 DRSP-EE)5.4 daysStandard Deviation 3.5
DRSP-EEAverage Number of Withdrawal Bleeding/Spotting DaysCycle 5 (n=819 NOMAC-E2; n=351 DRSP-EE)5.3 daysStandard Deviation 3.4
DRSP-EEAverage Number of Withdrawal Bleeding/Spotting DaysCycle 6 (n=733 NOMAC-E2; n=339 DRSP-EE)5.2 daysStandard Deviation 2.8
DRSP-EEAverage Number of Withdrawal Bleeding/Spotting DaysCycle 7 (n=686 NOMAC-E2; n=309 DRSP-EE)5.2 daysStandard Deviation 2.5
DRSP-EEAverage Number of Withdrawal Bleeding/Spotting DaysCycle 8 (n=639 NOMAC-E2; n=289 DRSP-EE)5.7 daysStandard Deviation 8.5
DRSP-EEAverage Number of Withdrawal Bleeding/Spotting DaysCycle 9 (n=616 NOMAC-E2; n=282 DRSP-EE)5.7 daysStandard Deviation 8.5
DRSP-EEAverage Number of Withdrawal Bleeding/Spotting DaysCycle 10 (n=564 NOMAC-E2; n=259 DRSP-EE)5.5 daysStandard Deviation 8.2
DRSP-EEAverage Number of Withdrawal Bleeding/Spotting DaysCycle 12 (n=516 NOMAC-E2; n=247 DRSP-EE)5.7 daysStandard Deviation 8.9
DRSP-EEAverage Number of Withdrawal Bleeding/Spotting DaysCycle 11 (n=538 NOMAC-E2; n=260 DRSP-EE)5.6 daysStandard Deviation 8.3
Secondary

Number of Participants With an Occurrence of Absence of Withdrawal Bleeding

Cycle control was evaluated on the basis of vaginal bleeding pattern as recorded daily by participants using e-diaries. Participants documented whether vaginal bleeding was present, and if present, indicated whether it was considered to be spotting or bleeding. Absence of withdrawal bleeding was defined as no bleeding/spotting episode that began during or continued into the expected bleeding period. Expected bleeding period: DRSP-EE group: 7-day period starting on Day 22 of the cycle; NOMAC-E2: 7-day period starting on Day 25 of the cycle and ending on Day 3 of the next cycle.

Time frame: Every 28-day cycle for 13 cycles (one year total)

Population: The ITT group consisted of all participants who were treated; ITT analyses of vaginal bleeding patterns were based on all participants in the ITT group who had at least one evaluable cycle. Cycles were considered to be non-evaluable in case of insufficient bleeding data or improper cycle length.~n= number of participants with evaluable cycles.

ArmMeasureGroupValue (NUMBER)
NOMAC-E2Number of Participants With an Occurrence of Absence of Withdrawal BleedingCycle 13 (n=666 NOMAC-E2; n=241 DRSP-EE)279 participants
NOMAC-E2Number of Participants With an Occurrence of Absence of Withdrawal BleedingCycle 1 (n=1466 NOMAC-E2; n=470 DRSP-EE)284 participants
NOMAC-E2Number of Participants With an Occurrence of Absence of Withdrawal BleedingCycle 3 (n=1233 NOMAC-E2; n=398 DRSP-EE)258 participants
NOMAC-E2Number of Participants With an Occurrence of Absence of Withdrawal BleedingCycle 4 (n=1135 NOMAC-E2; n=389 DRSP-EE)244 participants
NOMAC-E2Number of Participants With an Occurrence of Absence of Withdrawal BleedingCycle 5 (n=1064 NOMAC-E2; n=368 DRSP-EE)245 participants
NOMAC-E2Number of Participants With an Occurrence of Absence of Withdrawal BleedingCycle 6 (n=982 NOMAC-E2; n=349 DRSP-EE)249 participants
NOMAC-E2Number of Participants With an Occurrence of Absence of Withdrawal BleedingCycle 7 (n=931 NOMAC-E2; n=320 DRSP-EE)245 participants
NOMAC-E2Number of Participants With an Occurrence of Absence of Withdrawal BleedingCycle 8 (n=874 NOMAC-E2; n=298 DRSP-EE)235 participants
NOMAC-E2Number of Participants With an Occurrence of Absence of Withdrawal BleedingCycle 9 (n=861 NOMAC-E2; n=295 DRSP-EE)245 participants
NOMAC-E2Number of Participants With an Occurrence of Absence of Withdrawal BleedingCycle 10 (n=809 NOMAC-E2; n=271 DRSP-EE)245 participants
NOMAC-E2Number of Participants With an Occurrence of Absence of Withdrawal BleedingCycle 11 (n=770 NOMAC-E2; n=277 DRSP-EE)232 participants
NOMAC-E2Number of Participants With an Occurrence of Absence of Withdrawal BleedingCycle 12 (n=743 NOMAC-E2; n=259 DRSP-EE)227 participants
NOMAC-E2Number of Participants With an Occurrence of Absence of Withdrawal BleedingCycle 2 (n=1339 NOMAC-E2; n=440 DRSP-EE)237 participants
DRSP-EENumber of Participants With an Occurrence of Absence of Withdrawal BleedingCycle 11 (n=770 NOMAC-E2; n=277 DRSP-EE)17 participants
DRSP-EENumber of Participants With an Occurrence of Absence of Withdrawal BleedingCycle 13 (n=666 NOMAC-E2; n=241 DRSP-EE)14 participants
DRSP-EENumber of Participants With an Occurrence of Absence of Withdrawal BleedingCycle 7 (n=931 NOMAC-E2; n=320 DRSP-EE)11 participants
DRSP-EENumber of Participants With an Occurrence of Absence of Withdrawal BleedingCycle 1 (n=1466 NOMAC-E2; n=470 DRSP-EE)14 participants
DRSP-EENumber of Participants With an Occurrence of Absence of Withdrawal BleedingCycle 2 (n=1339 NOMAC-E2; n=440 DRSP-EE)17 participants
DRSP-EENumber of Participants With an Occurrence of Absence of Withdrawal BleedingCycle 10 (n=809 NOMAC-E2; n=271 DRSP-EE)12 participants
DRSP-EENumber of Participants With an Occurrence of Absence of Withdrawal BleedingCycle 3 (n=1233 NOMAC-E2; n=398 DRSP-EE)18 participants
DRSP-EENumber of Participants With an Occurrence of Absence of Withdrawal BleedingCycle 8 (n=874 NOMAC-E2; n=298 DRSP-EE)9 participants
DRSP-EENumber of Participants With an Occurrence of Absence of Withdrawal BleedingCycle 4 (n=1135 NOMAC-E2; n=389 DRSP-EE)20 participants
DRSP-EENumber of Participants With an Occurrence of Absence of Withdrawal BleedingCycle 12 (n=743 NOMAC-E2; n=259 DRSP-EE)12 participants
DRSP-EENumber of Participants With an Occurrence of Absence of Withdrawal BleedingCycle 5 (n=1064 NOMAC-E2; n=368 DRSP-EE)17 participants
DRSP-EENumber of Participants With an Occurrence of Absence of Withdrawal BleedingCycle 9 (n=861 NOMAC-E2; n=295 DRSP-EE)13 participants
DRSP-EENumber of Participants With an Occurrence of Absence of Withdrawal BleedingCycle 6 (n=982 NOMAC-E2; n=349 DRSP-EE)10 participants
Secondary

Number of Participants With an Occurrence of Breakthrough Bleeding

Cycle control was evaluated on the basis of vaginal bleeding pattern as recorded daily by participants using e-diaries. Participants documented whether vaginal bleeding was present, and if present, indicated whether it was considered to be spotting or bleeding. Breakthrough bleeding was defined as any bleeding episode that occurred during the expected non-bleeding period that was neither part of an early nor continued withdrawal bleeding. Expected non-bleeding period: LNG-EE group: 21-day period starting on Day 1 of the cycle; NOMAC-E2: 21-day period starting on Day 4 of the cycle.

Time frame: Every 28-day cycle for 13 cycles (one year total)

Population: The ITT group consisted of all participants who were treated; ITT analyses of vaginal bleeding patterns were based on all participants in the ITT group who had at least one evaluable cycle. Cycles were considered to be non-evaluable in case of insufficient bleeding data or improper cycle length.~n= number of participants with evaluable cycles.

ArmMeasureGroupValue (NUMBER)
NOMAC-E2Number of Participants With an Occurrence of Breakthrough BleedingCycle 3 (n=1233 NOMAC-E2; n=398 DRSP-EE)61 Participants
NOMAC-E2Number of Participants With an Occurrence of Breakthrough BleedingCycle 8 (n=874 NOMAC-E2; n=298 DRSP-EE)28 Participants
NOMAC-E2Number of Participants With an Occurrence of Breakthrough BleedingCycle 5 (n=1064 NOMAC-E2; n=368 DRSP-EE)52 Participants
NOMAC-E2Number of Participants With an Occurrence of Breakthrough BleedingCycle 9 (n=861 NOMAC-E2; n=295 DRSP-EE)32 Participants
NOMAC-E2Number of Participants With an Occurrence of Breakthrough BleedingCycle 2 (n=1339 NOMAC-E2; n=440 DRSP-EE)63 Participants
NOMAC-E2Number of Participants With an Occurrence of Breakthrough BleedingCycle 10 (n=809 NOMAC-E2; n=271 DRSP-EE)23 Participants
NOMAC-E2Number of Participants With an Occurrence of Breakthrough BleedingCycle 6 (n=982 NOMAC-E2; n=349 DRSP-EE)43 Participants
NOMAC-E2Number of Participants With an Occurrence of Breakthrough BleedingCycle 11 (n=770 NOMAC-E2; n=277 DRSP-EE)27 Participants
NOMAC-E2Number of Participants With an Occurrence of Breakthrough BleedingCycle 4 (n=1135 NOMAC-E2; n=389 DRSP-EE)54 Participants
NOMAC-E2Number of Participants With an Occurrence of Breakthrough BleedingCycle 12 (n=743 NOMAC-E2; n=259 DRSP-EE)30 Participants
NOMAC-E2Number of Participants With an Occurrence of Breakthrough BleedingCycle 7 (n=931 NOMAC-E2; n=320 DRSP-EE)41 Participants
NOMAC-E2Number of Participants With an Occurrence of Breakthrough BleedingCycle 13 (n=666 NOMAC-E2; n=241 DRSP-EE)21 Participants
NOMAC-E2Number of Participants With an Occurrence of Breakthrough BleedingCycle 1 (n=1466 NOMAC-E2; n=470 DRSP-EE)129 Participants
DRSP-EENumber of Participants With an Occurrence of Breakthrough BleedingCycle 13 (n=666 NOMAC-E2; n=241 DRSP-EE)12 Participants
DRSP-EENumber of Participants With an Occurrence of Breakthrough BleedingCycle 1 (n=1466 NOMAC-E2; n=470 DRSP-EE)24 Participants
DRSP-EENumber of Participants With an Occurrence of Breakthrough BleedingCycle 2 (n=1339 NOMAC-E2; n=440 DRSP-EE)20 Participants
DRSP-EENumber of Participants With an Occurrence of Breakthrough BleedingCycle 3 (n=1233 NOMAC-E2; n=398 DRSP-EE)16 Participants
DRSP-EENumber of Participants With an Occurrence of Breakthrough BleedingCycle 4 (n=1135 NOMAC-E2; n=389 DRSP-EE)11 Participants
DRSP-EENumber of Participants With an Occurrence of Breakthrough BleedingCycle 5 (n=1064 NOMAC-E2; n=368 DRSP-EE)12 Participants
DRSP-EENumber of Participants With an Occurrence of Breakthrough BleedingCycle 6 (n=982 NOMAC-E2; n=349 DRSP-EE)8 Participants
DRSP-EENumber of Participants With an Occurrence of Breakthrough BleedingCycle 7 (n=931 NOMAC-E2; n=320 DRSP-EE)7 Participants
DRSP-EENumber of Participants With an Occurrence of Breakthrough BleedingCycle 8 (n=874 NOMAC-E2; n=298 DRSP-EE)5 Participants
DRSP-EENumber of Participants With an Occurrence of Breakthrough BleedingCycle 9 (n=861 NOMAC-E2; n=295 DRSP-EE)7 Participants
DRSP-EENumber of Participants With an Occurrence of Breakthrough BleedingCycle 10 (n=809 NOMAC-E2; n=271 DRSP-EE)7 Participants
DRSP-EENumber of Participants With an Occurrence of Breakthrough BleedingCycle 11 (n=770 NOMAC-E2; n=277 DRSP-EE)7 Participants
DRSP-EENumber of Participants With an Occurrence of Breakthrough BleedingCycle 12 (n=743 NOMAC-E2; n=259 DRSP-EE)13 Participants
Secondary

Number of Participants With an Occurrence of Breakthrough Bleeding/Spotting

Cycle control was evaluated on the basis of vaginal bleeding pattern as recorded daily by participants using e-diaries. Participants documented whether vaginal bleeding was present, and if present, indicated whether it was considered to be spotting or bleeding. Breakthrough bleeding/spotting was defined as any episode that occurred during the expected non-bleeding period that was neither an early nor a continued withdrawal bleeding. Expected non-bleeding period: DRSP-EE group: 21-day period starting on Day 1 of the cycle; NOMAC-E2: 21-day period starting on Day 4 of the cycle.

Time frame: Every 28-day cycle for 13 cycles (one year total)

Population: The ITT group consisted of all participants who were treated; ITT analyses of vaginal bleeding patterns were based on all participants in the ITT group who had at least one evaluable cycle. Cycles were considered to be non-evaluable in case of insufficient bleeding data or improper cycle length.~n= number of participants with evaluable cycles.

ArmMeasureGroupValue (NUMBER)
NOMAC-E2Number of Participants With an Occurrence of Breakthrough Bleeding/SpottingCycle 3 (n=1233 NOMAC-E2; n=398 DRSP-EE)297 participants
NOMAC-E2Number of Participants With an Occurrence of Breakthrough Bleeding/SpottingCycle 8 (n=874 NOMAC-E2; n=298 DRSP-EE)127 participants
NOMAC-E2Number of Participants With an Occurrence of Breakthrough Bleeding/SpottingCycle 5 (n=1064 NOMAC-E2; n=368 DRSP-EE)221 participants
NOMAC-E2Number of Participants With an Occurrence of Breakthrough Bleeding/SpottingCycle 9 (n=861 NOMAC-E2; n=295 DRSP-EE)129 participants
NOMAC-E2Number of Participants With an Occurrence of Breakthrough Bleeding/SpottingCycle 2 (n=1339 NOMAC-E2; n=440 DRSP-EE)289 participants
NOMAC-E2Number of Participants With an Occurrence of Breakthrough Bleeding/SpottingCycle 10 (n=809 NOMAC-E2; n=271 DRSP-EE)121 participants
NOMAC-E2Number of Participants With an Occurrence of Breakthrough Bleeding/SpottingCycle 6 (n=982 NOMAC-E2; n=349 DRSP-EE)182 participants
NOMAC-E2Number of Participants With an Occurrence of Breakthrough Bleeding/SpottingCycle 11 (n=770 NOMAC-E2; n=277 DRSP-EE)125 participants
NOMAC-E2Number of Participants With an Occurrence of Breakthrough Bleeding/SpottingCycle 4 (n=1135 NOMAC-E2; n=389 DRSP-EE)231 participants
NOMAC-E2Number of Participants With an Occurrence of Breakthrough Bleeding/SpottingCycle 12 (n=743 NOMAC-E2; n=259 DRSP-EE)110 participants
NOMAC-E2Number of Participants With an Occurrence of Breakthrough Bleeding/SpottingCycle 7 (n=931 NOMAC-E2; n=320 DRSP-EE)165 participants
NOMAC-E2Number of Participants With an Occurrence of Breakthrough Bleeding/SpottingCycle 13 (n=666 NOMAC-E2; n=241 DRSP-EE)94 participants
NOMAC-E2Number of Participants With an Occurrence of Breakthrough Bleeding/SpottingCycle 1 (n=1466 NOMAC-E2; n=470 DRSP-EE)483 participants
DRSP-EENumber of Participants With an Occurrence of Breakthrough Bleeding/SpottingCycle 13 (n=666 NOMAC-E2; n=241 DRSP-EE)33 participants
DRSP-EENumber of Participants With an Occurrence of Breakthrough Bleeding/SpottingCycle 1 (n=1466 NOMAC-E2; n=470 DRSP-EE)130 participants
DRSP-EENumber of Participants With an Occurrence of Breakthrough Bleeding/SpottingCycle 2 (n=1339 NOMAC-E2; n=440 DRSP-EE)75 participants
DRSP-EENumber of Participants With an Occurrence of Breakthrough Bleeding/SpottingCycle 3 (n=1233 NOMAC-E2; n=398 DRSP-EE)54 participants
DRSP-EENumber of Participants With an Occurrence of Breakthrough Bleeding/SpottingCycle 4 (n=1135 NOMAC-E2; n=389 DRSP-EE)59 participants
DRSP-EENumber of Participants With an Occurrence of Breakthrough Bleeding/SpottingCycle 5 (n=1064 NOMAC-E2; n=368 DRSP-EE)62 participants
DRSP-EENumber of Participants With an Occurrence of Breakthrough Bleeding/SpottingCycle 6 (n=982 NOMAC-E2; n=349 DRSP-EE)53 participants
DRSP-EENumber of Participants With an Occurrence of Breakthrough Bleeding/SpottingCycle 7 (n=931 NOMAC-E2; n=320 DRSP-EE)45 participants
DRSP-EENumber of Participants With an Occurrence of Breakthrough Bleeding/SpottingCycle 8 (n=874 NOMAC-E2; n=298 DRSP-EE)47 participants
DRSP-EENumber of Participants With an Occurrence of Breakthrough Bleeding/SpottingCycle 9 (n=861 NOMAC-E2; n=295 DRSP-EE)47 participants
DRSP-EENumber of Participants With an Occurrence of Breakthrough Bleeding/SpottingCycle 10 (n=809 NOMAC-E2; n=271 DRSP-EE)32 participants
DRSP-EENumber of Participants With an Occurrence of Breakthrough Bleeding/SpottingCycle 11 (n=770 NOMAC-E2; n=277 DRSP-EE)29 participants
DRSP-EENumber of Participants With an Occurrence of Breakthrough Bleeding/SpottingCycle 12 (n=743 NOMAC-E2; n=259 DRSP-EE)30 participants
Secondary

Number of Participants With an Occurrence of Breakthrough Spotting (Spotting Only)

Cycle control was evaluated on the basis of vaginal bleeding pattern as recorded daily by participants using e-diaries. Participants documented whether vaginal bleeding was present, and if present, indicated whether it was considered to be spotting or bleeding. Breakthrough spotting was defined as any spotting episode that occurred during the expected non-bleeding period that was neither part of an early nor continued withdrawal bleeding. Expected non-bleeding period: DRSP-EE group: 21-day period starting on Day 1 of the cycle; NOMAC-E2: 21-day period starting on Day 4 of the cycle.

Time frame: Every 28-day cycle for 13 cycles (one year total)

Population: The ITT group consisted of all participants who were treated; ITT analyses of vaginal bleeding patterns were based on all participants in the ITT group who had at least one evaluable cycle. Cycles were considered to be non-evaluable in case of insufficient bleeding data or improper cycle length.~n= number of participants with evaluable cycles.

ArmMeasureGroupValue (NUMBER)
NOMAC-E2Number of Participants With an Occurrence of Breakthrough Spotting (Spotting Only)Cycle 3 (n=1233 NOMAC-E2; n=398 DRSP-EE)257 Participants
NOMAC-E2Number of Participants With an Occurrence of Breakthrough Spotting (Spotting Only)Cycle 8 (n=874 NOMAC-E2; n=298 DRSP-EE)104 Participants
NOMAC-E2Number of Participants With an Occurrence of Breakthrough Spotting (Spotting Only)Cycle 5 (n=1064 NOMAC-E2; n=368 DRSP-EE)180 Participants
NOMAC-E2Number of Participants With an Occurrence of Breakthrough Spotting (Spotting Only)Cycle 9 (n=861 NOMAC-E2; n=295 DRSP-EE)106 Participants
NOMAC-E2Number of Participants With an Occurrence of Breakthrough Spotting (Spotting Only)Cycle 2 (n=1339 NOMAC-E2; n=440 DRSP-EE)244 Participants
NOMAC-E2Number of Participants With an Occurrence of Breakthrough Spotting (Spotting Only)Cycle 10 (n=809 NOMAC-E2; n=271 DRSP-EE)105 Participants
NOMAC-E2Number of Participants With an Occurrence of Breakthrough Spotting (Spotting Only)Cycle 6 (n=982 NOMAC-E2; n=349 DRSP-EE)148 Participants
NOMAC-E2Number of Participants With an Occurrence of Breakthrough Spotting (Spotting Only)Cycle 11 (n=770 NOMAC-E2; n=277 DRSP-EE)100 Participants
NOMAC-E2Number of Participants With an Occurrence of Breakthrough Spotting (Spotting Only)Cycle 4 (n=1135 NOMAC-E2; n=389 DRSP-EE)186 Participants
NOMAC-E2Number of Participants With an Occurrence of Breakthrough Spotting (Spotting Only)Cycle 12 (n=743 NOMAC-E2; n=259 DRSP-EE)87 Participants
NOMAC-E2Number of Participants With an Occurrence of Breakthrough Spotting (Spotting Only)Cycle 7 (n=931 NOMAC-E2; n=320 DRSP-EE)135 Participants
NOMAC-E2Number of Participants With an Occurrence of Breakthrough Spotting (Spotting Only)Cycle 13 (n=666 NOMAC-E2; n=241 DRSP-EE)76 Participants
NOMAC-E2Number of Participants With an Occurrence of Breakthrough Spotting (Spotting Only)Cycle 1 (n=1466 NOMAC-E2; n=470 DRSP-EE)408 Participants
DRSP-EENumber of Participants With an Occurrence of Breakthrough Spotting (Spotting Only)Cycle 13 (n=666 NOMAC-E2; n=241 DRSP-EE)22 Participants
DRSP-EENumber of Participants With an Occurrence of Breakthrough Spotting (Spotting Only)Cycle 1 (n=1466 NOMAC-E2; n=470 DRSP-EE)118 Participants
DRSP-EENumber of Participants With an Occurrence of Breakthrough Spotting (Spotting Only)Cycle 2 (n=1339 NOMAC-E2; n=440 DRSP-EE)58 Participants
DRSP-EENumber of Participants With an Occurrence of Breakthrough Spotting (Spotting Only)Cycle 3 (n=1233 NOMAC-E2; n=398 DRSP-EE)42 Participants
DRSP-EENumber of Participants With an Occurrence of Breakthrough Spotting (Spotting Only)Cycle 4 (n=1135 NOMAC-E2; n=389 DRSP-EE)51 Participants
DRSP-EENumber of Participants With an Occurrence of Breakthrough Spotting (Spotting Only)Cycle 5 (n=1064 NOMAC-E2; n=368 DRSP-EE)52 Participants
DRSP-EENumber of Participants With an Occurrence of Breakthrough Spotting (Spotting Only)Cycle 6 (n=982 NOMAC-E2; n=349 DRSP-EE)45 Participants
DRSP-EENumber of Participants With an Occurrence of Breakthrough Spotting (Spotting Only)Cycle 7 (n=931 NOMAC-E2; n=320 DRSP-EE)40 Participants
DRSP-EENumber of Participants With an Occurrence of Breakthrough Spotting (Spotting Only)Cycle 8 (n=874 NOMAC-E2; n=298 DRSP-EE)43 Participants
DRSP-EENumber of Participants With an Occurrence of Breakthrough Spotting (Spotting Only)Cycle 9 (n=861 NOMAC-E2; n=295 DRSP-EE)40 Participants
DRSP-EENumber of Participants With an Occurrence of Breakthrough Spotting (Spotting Only)Cycle 10 (n=809 NOMAC-E2; n=271 DRSP-EE)27 Participants
DRSP-EENumber of Participants With an Occurrence of Breakthrough Spotting (Spotting Only)Cycle 11 (n=770 NOMAC-E2; n=277 DRSP-EE)22 Participants
DRSP-EENumber of Participants With an Occurrence of Breakthrough Spotting (Spotting Only)Cycle 12 (n=743 NOMAC-E2; n=259 DRSP-EE)18 Participants
Secondary

Number of Participants With an Occurrence of Continued Withdrawal Bleeding

Cycle control was evaluated on the basis of vaginal bleeding pattern as recorded daily by participants using e-diaries. Participants documented whether vaginal bleeding was present, and if present, indicated whether it was considered to be spotting or bleeding. Continued withdrawal bleeding was defined as any withdrawal bleeding that continued into the expected non-bleeding period of the next cycle. Expected non-bleeding period: DRSP-EE group: 21-day period starting on Day 1 of the cycle; NOMAC-E2: 21-day period starting on Day 4 of the cycle.

Time frame: Every 28-day cycle for 12 cycles

Population: The ITT group consisted of all participants who were treated; ITT analyses of vaginal bleeding patterns were based on all participants in the ITT group who had at least one evaluable cycle. Cycles were considered to be non-evaluable in case of insufficient bleeding data or improper cycle length.

ArmMeasureGroupValue (NUMBER)
NOMAC-E2Number of Participants With an Occurrence of Continued Withdrawal BleedingCycle 1 (n=1455 NOMAC-E2; n=466 DRSP-EE)412 Participants
NOMAC-E2Number of Participants With an Occurrence of Continued Withdrawal BleedingCycle 2 (n=1320 NOMAC-E2; n=437 DRSP-EE)406 Participants
NOMAC-E2Number of Participants With an Occurrence of Continued Withdrawal BleedingCycle 3 (n=1201 NOMAC-E2; n=397 DRSP-EE)364 Participants
NOMAC-E2Number of Participants With an Occurrence of Continued Withdrawal BleedingCycle 4 (n=1120 NOMAC-E2; n=387 DRSP-EE)321 Participants
NOMAC-E2Number of Participants With an Occurrence of Continued Withdrawal BleedingCycle 5 (n=1051 NOMAC-E2; n=365 DRSP-EE)280 Participants
NOMAC-E2Number of Participants With an Occurrence of Continued Withdrawal BleedingCycle 6 (n=965 NOMAC-E2; n=348 DRSP-EE)285 Participants
NOMAC-E2Number of Participants With an Occurrence of Continued Withdrawal BleedingCycle 7 (n=920 NOMAC-E2; n=318 DRSP-EE)247 Participants
NOMAC-E2Number of Participants With an Occurrence of Continued Withdrawal BleedingCycle 8 (n=868 NOMAC-E2; n=296 DRSP-EE)224 Participants
NOMAC-E2Number of Participants With an Occurrence of Continued Withdrawal BleedingCycle 9 (n=854 NOMAC-E2; n=291 DRSP-EE)228 Participants
NOMAC-E2Number of Participants With an Occurrence of Continued Withdrawal BleedingCycle 10 (n=806 NOMAC-E2; n=269 DRSP-EE)191 Participants
NOMAC-E2Number of Participants With an Occurrence of Continued Withdrawal BleedingCycle 11 (n=766 NOMAC-E2; n=276 DRSP-EE)195 Participants
NOMAC-E2Number of Participants With an Occurrence of Continued Withdrawal BleedingCycle 12 (n=725 NOMAC-E2; n=257 DRSP-EE)184 Participants
DRSP-EENumber of Participants With an Occurrence of Continued Withdrawal BleedingCycle 11 (n=766 NOMAC-E2; n=276 DRSP-EE)162 Participants
DRSP-EENumber of Participants With an Occurrence of Continued Withdrawal BleedingCycle 1 (n=1455 NOMAC-E2; n=466 DRSP-EE)283 Participants
DRSP-EENumber of Participants With an Occurrence of Continued Withdrawal BleedingCycle 7 (n=920 NOMAC-E2; n=318 DRSP-EE)190 Participants
DRSP-EENumber of Participants With an Occurrence of Continued Withdrawal BleedingCycle 2 (n=1320 NOMAC-E2; n=437 DRSP-EE)274 Participants
DRSP-EENumber of Participants With an Occurrence of Continued Withdrawal BleedingCycle 10 (n=806 NOMAC-E2; n=269 DRSP-EE)158 Participants
DRSP-EENumber of Participants With an Occurrence of Continued Withdrawal BleedingCycle 3 (n=1201 NOMAC-E2; n=397 DRSP-EE)243 Participants
DRSP-EENumber of Participants With an Occurrence of Continued Withdrawal BleedingCycle 8 (n=868 NOMAC-E2; n=296 DRSP-EE)170 Participants
DRSP-EENumber of Participants With an Occurrence of Continued Withdrawal BleedingCycle 4 (n=1120 NOMAC-E2; n=387 DRSP-EE)222 Participants
DRSP-EENumber of Participants With an Occurrence of Continued Withdrawal BleedingCycle 12 (n=725 NOMAC-E2; n=257 DRSP-EE)153 Participants
DRSP-EENumber of Participants With an Occurrence of Continued Withdrawal BleedingCycle 5 (n=1051 NOMAC-E2; n=365 DRSP-EE)203 Participants
DRSP-EENumber of Participants With an Occurrence of Continued Withdrawal BleedingCycle 9 (n=854 NOMAC-E2; n=291 DRSP-EE)176 Participants
DRSP-EENumber of Participants With an Occurrence of Continued Withdrawal BleedingCycle 6 (n=965 NOMAC-E2; n=348 DRSP-EE)190 Participants
Secondary

Number of Participants With an Occurrence of Early Withdrawal Bleeding

Cycle control was evaluated on the basis of vaginal bleeding pattern as recorded daily by participants using e-diaries. Participants documented whether vaginal bleeding was present, and if present, indicated whether it was considered to be spotting or bleeding. Early withdrawal bleeding was defined as any withdrawal bleeding that started before the current expected bleeding period. Expected bleeding period: DRSP-EE group: 7-day period starting on Day 22 of the cycle; NOMAC-E2: 7-day period starting on Day 25 of the cycle and ending on Day 3 of the next cycle.

Time frame: Every 28-day cycle for 13 cycles (one year total)

Population: The ITT group consisted of all participants who were treated; ITT analyses of vaginal bleeding patterns were based on all participants in the ITT group who had at least one evaluable cycle. Cycles were considered to be non-evaluable in case of insufficient bleeding data or improper cycle length.~n= number of participants with evaluable cycles.

ArmMeasureGroupValue (NUMBER)
NOMAC-E2Number of Participants With an Occurrence of Early Withdrawal BleedingCycle 3 (n=1233 NOMAC-E2; n=398 DRSP-EE)80 Participants
NOMAC-E2Number of Participants With an Occurrence of Early Withdrawal BleedingCycle 8 (n=874 NOMAC-E2; n=298 DRSP-EE)31 Participants
NOMAC-E2Number of Participants With an Occurrence of Early Withdrawal BleedingCycle 5 (n=1064 NOMAC-E2; n=368 DRSP-EE)55 Participants
NOMAC-E2Number of Participants With an Occurrence of Early Withdrawal BleedingCycle 9 (n=861 NOMAC-E2; n=295 DRSP-EE)33 Participants
NOMAC-E2Number of Participants With an Occurrence of Early Withdrawal BleedingCycle 2 (n=1339 NOMAC-E2; n=440 DRSP-EE)93 Participants
NOMAC-E2Number of Participants With an Occurrence of Early Withdrawal BleedingCycle 10 (n=809 NOMAC-E2; n=271 DRSP-EE)19 Participants
NOMAC-E2Number of Participants With an Occurrence of Early Withdrawal BleedingCycle 6 (n=982 NOMAC-E2; n=349 DRSP-EE)34 Participants
NOMAC-E2Number of Participants With an Occurrence of Early Withdrawal BleedingCycle 11 (n=770 NOMAC-E2; n=277 DRSP-EE)27 Participants
NOMAC-E2Number of Participants With an Occurrence of Early Withdrawal BleedingCycle 4 (n=1135 NOMAC-E2; n=389 DRSP-EE)69 Participants
NOMAC-E2Number of Participants With an Occurrence of Early Withdrawal BleedingCycle 12 (n=743 NOMAC-E2; n=259 DRSP-EE)18 Participants
NOMAC-E2Number of Participants With an Occurrence of Early Withdrawal BleedingCycle 7 (n=931 NOMAC-E2; n=320 DRSP-EE)36 Participants
NOMAC-E2Number of Participants With an Occurrence of Early Withdrawal BleedingCycle 13 (n=666 NOMAC-E2; n=241 DRSP-EE)17 Participants
NOMAC-E2Number of Participants With an Occurrence of Early Withdrawal BleedingCycle 1 (n=1466 NOMAC-E2; n=470 DRSP-EE)142 Participants
DRSP-EENumber of Participants With an Occurrence of Early Withdrawal BleedingCycle 13 (n=666 NOMAC-E2; n=241 DRSP-EE)8 Participants
DRSP-EENumber of Participants With an Occurrence of Early Withdrawal BleedingCycle 1 (n=1466 NOMAC-E2; n=470 DRSP-EE)52 Participants
DRSP-EENumber of Participants With an Occurrence of Early Withdrawal BleedingCycle 2 (n=1339 NOMAC-E2; n=440 DRSP-EE)29 Participants
DRSP-EENumber of Participants With an Occurrence of Early Withdrawal BleedingCycle 3 (n=1233 NOMAC-E2; n=398 DRSP-EE)22 Participants
DRSP-EENumber of Participants With an Occurrence of Early Withdrawal BleedingCycle 4 (n=1135 NOMAC-E2; n=389 DRSP-EE)20 Participants
DRSP-EENumber of Participants With an Occurrence of Early Withdrawal BleedingCycle 5 (n=1064 NOMAC-E2; n=368 DRSP-EE)22 Participants
DRSP-EENumber of Participants With an Occurrence of Early Withdrawal BleedingCycle 6 (n=982 NOMAC-E2; n=349 DRSP-EE)16 Participants
DRSP-EENumber of Participants With an Occurrence of Early Withdrawal BleedingCycle 7 (n=931 NOMAC-E2; n=320 DRSP-EE)18 Participants
DRSP-EENumber of Participants With an Occurrence of Early Withdrawal BleedingCycle 8 (n=874 NOMAC-E2; n=298 DRSP-EE)12 Participants
DRSP-EENumber of Participants With an Occurrence of Early Withdrawal BleedingCycle 9 (n=861 NOMAC-E2; n=295 DRSP-EE)11 Participants
DRSP-EENumber of Participants With an Occurrence of Early Withdrawal BleedingCycle 10 (n=809 NOMAC-E2; n=271 DRSP-EE)9 Participants
DRSP-EENumber of Participants With an Occurrence of Early Withdrawal BleedingCycle 11 (n=770 NOMAC-E2; n=277 DRSP-EE)9 Participants
DRSP-EENumber of Participants With an Occurrence of Early Withdrawal BleedingCycle 12 (n=743 NOMAC-E2; n=259 DRSP-EE)9 Participants

Source: ClinicalTrials.gov · Data processed: Mar 5, 2026