Women with normal menstrual interval (24-38 days) 4 mg drospirenone, progestin-only pill, quick start, ovulation
Conditions
Interventions
Arm 1: Start 4mg drospirenone (progestin-only pill) on day 7-9 of menstruation 1 tablet per day until out of the package (28 tablets).
,Arm 2: Start combined oral contraceptive (Ethinyl estradiol 20 m
Sponsors
Thai red cross research committee
Ratchadapisek Research Funds
Eligibility
Sex/Gender
Female
Age
18 Years to 45 Years
Inclusion criteria
Inclusion criteria: 1. Women aged 18 to 45 years old 2. Body mass index 18 to 30 kg/m2 3. Agree to use a condom as contraception or be sterilized 4. Agree to participate in this study and complete an informed consent form 5. Menstruation interval within 24-38 days
Exclusion criteria
Exclusion criteria: 1. History of estrogen, progestin or testosterone use within 3 months 2. Being pregnant or within 3 months of breastfeeding 3. Being a cervical cancer patient or having a precancerous cervical lesion 4. History of allergy to estrogen or progestin 5. Ovarian cyst or ovarian tumor 6. Any conditions in US Medical Eligibility Criteria 3 or 4 for progestin-only pills or combined oral contraceptive pills
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Ovulation Every 2-3 days until ovulation or follicular structure-like less than 13 mm Modified Hoogland score | — |
Secondary
| Measure | Time frame |
|---|---|
| Cervical mucus Every 2-3 days until ovulation or unfavorable cervical mucus archieved Modified WHO cervical mucus score with LH and progesterone level,Adverse effect Every follow-up day Patient reported outcome using patient's diary and assistant interview | — |
Countries
Thailand
Contacts
Public ContactAtist Ratanasaengsuang
The Thai Redcross Society
Outcome results
None listed