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Naproxen Sodium Extended-Release Actual Use Study

An Open Label, Actual Use Study in Consumers Taking an Extended-Release Over the Counter NSAID in a Naturalistic Setting

Status
Completed
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00751400
Enrollment
497
Registered
2008-09-12
Start date
2008-07-31
Completion date
2008-11-30
Last updated
2015-08-25

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

Conditions

Pain

Keywords

Non-prescription

Brief summary

The purpose of this Study is to assess how subjects will use the investigational product in an uncontrolled, naturalistic environment.

Detailed description

Issues on adverse event data are addressed in the Adverse Event section. The following acronyms and abbreviations were used in the results section. \- General Educational Development (GED)

Interventions

Consumer use of Extended Release Naproxen Sodium

Sponsors

Pegus Research, Inc.
CollaboratorINDUSTRY
Bayer
Lead SponsorINDUSTRY

Study design

Allocation
NON_RANDOMIZED
Intervention model
SINGLE_GROUP
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
12 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Self report use of Over The Counter (OTC) analgesics * Able to read and understand English * Provide written informed consent (subjects 12- 17 years of age provide written as sent and/ or parent or legal guardian provide written consent) * Purchase the investigational product

Exclusion criteria

* Have participated in a study involving OTC analgesics in the last 12 months * They or someone else in the household work for a market research company, an advertising agency, a public relations firm, pharmaceutical company, as a healthcare professional, or as part of a health care practice * Have a history of known allergies to nonsteroidal anti-inflammatory drugs (NSAIDs) (i.e., Naproxen, Ibuprofen, etc) or Aspirin * Have a history of heart surgery in the last 60 days or plans for heart surgery in the next 60 days * (Female subjects) are pregnant or breastfeeding

Design outcomes

Primary

MeasureTime frameDescription
Use Days With One or More Misuse Occasions1 monthMisuse occasion: any reported use of 2 or more tablets within a 22 hour period (included use of 2 tablets in 1 dose or the use of 1 tablet at one time and 1+ tablets at a later time within the same 22 hour period). Use-days were calculated based on days in which there was subject-reported product consumption, meaning that if a tablet was consumed on a day this resulted in 1 use-day. If a subject reported product consumption on 3 different days this resulted in 3 use-days. The cumulative expression of use-days is the total number of use-days reported by all subjects with follow up data.

Secondary

MeasureTime frameDescription
Use Days With and Without Next Dose Less Than 22 Hours Later1 monthUse-days were calculated based on days in which there was subject-reported product consumption, meaning that if a tablet was consumed on a day this resulted in one use-day. If a subject reported product consumption on three different days this resulted in three use-days. The cumulative expression of use-days is the total number of use-days reported by all subjects with follow up data.
Number of Subjects With and Without More Than One Tablet Taken Per Dose1 month
Number of Subjects With and Without Next Dose Less Than 22 Hours Later1 monthThis Outcome is a measure of subjects while Outcome Measure 3 provides the outcome as a measure of cumulative number of use-days for all subjects involved.
Number of Subjects With and Without More Than 660 mg at Least Once1 monthThis measure refers to number of subjects that exceeded 660 mg of naproxen sodium per day at least once during the reporting period. The maximum dose (660 mg) may have been exceeded with one dose (if a subject consumed two tablets in one dosing occasion) or may have been exceeded throughout the course of a use-day (if a subject took one tablet in one dosing occasion and then later in the same day took one or more tablets in another dosing occasion).
Dosing Occasions With One and More Than One Tablet Taken1 monthDosing occasion means a single occasion in which a subject reported consuming the study drug. Multiple dosing occasions were possible throughout one use-day. For example, if a subject took one tablet at 6 am this would result in one dosing occasion. If the same subject took one tablet later that same day at 8 pm this would result in a second dosing occasion.
Number of Subjects That Have Taken Study Drug on More Than 10 Consecutive Days and Not on More Than 10 Consecutive Days1 monthThis measure is reporting how many subjects exceeded the label limit for consecutive days of study drug dosing
Number of Total Dosing Occasions Per Subject1 monthDosing occasion means a single occasion in which a subject reported consuming the study drug. Multiple dosing occasions were possible throughout one use-day. For example, if a subject took one tablet at 6 am this would result in one dosing occasion. If the same subject took one tablet later that same day at 8 pm this would result in a second dosing occasion.
Number of Dosing Occasions Per Subject That Exceeded 660 mg1 monthDosing occasion means a single occasion in which a subject reported consuming the study drug. Multiple dosing occasions were possible throughout one use-day. For example, if a subject took one tablet at 6 am this would result in one dosing occasion. If the same subject took one tablet later that same day at 8 pm this would result in a second dosing occasion.
Average Daily Dose1 month

Countries

United States

Participant flow

Recruitment details

Recruitment for the study was conducted using newspaper ads, direct mailing, in-store pharmacy posters, and flyers. Potential subjects who learned about the study through local advertising were directed to call a toll-free number (call center at the CRO (Contract Research Organization)) where minimal screening questions were asked.

Pre-assignment details

Once at the pharmacy, if the screening criteria were met, subjects were given an (empty) OTC (Over The Counter) package and were allowed as much time as needed to review the label. They were then told the cost of the investigational product and asked if they would like to purchase it for their own use.

Participants by arm

ArmCount
Naproxen Sodium ER (BAYH6689)
subjects take one tablet Naproxen Sodium ER (extended release) every 24 hours while symptoms last for no more than 10 consecutive days for pain and no more than 3 consecutive days for fever
497
Total497

Withdrawals & dropouts

PeriodReasonFG000
Overall StudyLost to Follow-up10

Baseline characteristics

CharacteristicNaproxen Sodium ER (BAYH6689)
Age, Continuous49.8 years
STANDARD_DEVIATION 15.1
Education
8th grade or less
6 participants
Education
College graduate
117 participants
Education
High school graduate, GED, or certificate
119 participants
Education
Missing
0 participants
Education
Post-graduate degree
49 participants
Education
Some college or technical school
185 participants
Education
Some high school
21 participants
Literacy
Low
56 participants
Literacy
No REALM Score
4 participants
Literacy
Normal
437 participants
Prior Analgesic Use
Heavy
148 participants
Prior Analgesic Use
Regular
349 participants
Race
Asian
8 participants
Race
Black
56 participants
Race
Hispanic
3 participants
Race
Missing
0 participants
Race
Other
31 participants
Race
White
399 participants
Sex: Female, Male
Female
292 Participants
Sex: Female, Male
Male
205 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
— / —
other
Total, other adverse events
111 / 485
serious
Total, serious adverse events
3 / 485

Outcome results

Primary

Use Days With One or More Misuse Occasions

Misuse occasion: any reported use of 2 or more tablets within a 22 hour period (included use of 2 tablets in 1 dose or the use of 1 tablet at one time and 1+ tablets at a later time within the same 22 hour period). Use-days were calculated based on days in which there was subject-reported product consumption, meaning that if a tablet was consumed on a day this resulted in 1 use-day. If a subject reported product consumption on 3 different days this resulted in 3 use-days. The cumulative expression of use-days is the total number of use-days reported by all subjects with follow up data.

Time frame: 1 month

Population: Number of subjects reflects subjects that completed at least one interview and provided use information for the previous 5 days

ArmMeasureGroupValue (NUMBER)
Naproxen Sodium ER (BAYH6689)Use Days With One or More Misuse Occasionsuse days without a misuse occasion2112 days
Naproxen Sodium ER (BAYH6689)Use Days With One or More Misuse Occasionsuse days with a misuse occasion294 days
Secondary

Average Daily Dose

Time frame: 1 month

Population: Number of subjects reflects subjects that completed at least one interview and provided use information for the previous 5 days

ArmMeasureValue (MEAN)Dispersion
Naproxen Sodium ER (BAYH6689)Average Daily Dose722 mgStandard Deviation 233.4
Secondary

Dosing Occasions With One and More Than One Tablet Taken

Dosing occasion means a single occasion in which a subject reported consuming the study drug. Multiple dosing occasions were possible throughout one use-day. For example, if a subject took one tablet at 6 am this would result in one dosing occasion. If the same subject took one tablet later that same day at 8 pm this would result in a second dosing occasion.

Time frame: 1 month

Population: Number of subjects reflects subjects that completed at least one interview and provided use information for the previous 5 days

ArmMeasureGroupValue (NUMBER)
Naproxen Sodium ER (BAYH6689)Dosing Occasions With One and More Than One Tablet Takenonly one tablet taken2500 dosing occasions
Naproxen Sodium ER (BAYH6689)Dosing Occasions With One and More Than One Tablet Takenmore than one tablet taken66 dosing occasions
Secondary

Number of Dosing Occasions Per Subject That Exceeded 660 mg

Dosing occasion means a single occasion in which a subject reported consuming the study drug. Multiple dosing occasions were possible throughout one use-day. For example, if a subject took one tablet at 6 am this would result in one dosing occasion. If the same subject took one tablet later that same day at 8 pm this would result in a second dosing occasion.

Time frame: 1 month

Population: Number of subjects reflects subjects that completed at least one interview and provided use information for the previous 5 days

ArmMeasureValue (MEAN)Dispersion
Naproxen Sodium ER (BAYH6689)Number of Dosing Occasions Per Subject That Exceeded 660 mg0.6 dosing occasionsStandard Deviation 1.6
Secondary

Number of Subjects That Have Taken Study Drug on More Than 10 Consecutive Days and Not on More Than 10 Consecutive Days

This measure is reporting how many subjects exceeded the label limit for consecutive days of study drug dosing

Time frame: 1 month

Population: number of subjects reporting at least one tablet taken at any point during study

ArmMeasureGroupValue (NUMBER)
Naproxen Sodium ER (BAYH6689)Number of Subjects That Have Taken Study Drug on More Than 10 Consecutive Days and Not on More Than 10 Consecutive Daysnot more than 10 consecutive days376 participants
Naproxen Sodium ER (BAYH6689)Number of Subjects That Have Taken Study Drug on More Than 10 Consecutive Days and Not on More Than 10 Consecutive Daysmore than 10 consecutive days109 participants
Secondary

Number of Subjects With and Without More Than 660 mg at Least Once

This measure refers to number of subjects that exceeded 660 mg of naproxen sodium per day at least once during the reporting period. The maximum dose (660 mg) may have been exceeded with one dose (if a subject consumed two tablets in one dosing occasion) or may have been exceeded throughout the course of a use-day (if a subject took one tablet in one dosing occasion and then later in the same day took one or more tablets in another dosing occasion).

Time frame: 1 month

Population: Number of subjects reflects subjects that completed at least one interview and provided use information for the previous 5 days

ArmMeasureGroupValue (NUMBER)
Naproxen Sodium ER (BAYH6689)Number of Subjects With and Without More Than 660 mg at Least Oncenot more than 660 mg344 participants
Naproxen Sodium ER (BAYH6689)Number of Subjects With and Without More Than 660 mg at Least Oncemore than 660 mg at least once123 participants
Secondary

Number of Subjects With and Without More Than One Tablet Taken Per Dose

Time frame: 1 month

Population: Number of subjects reflects subjects that completed at least one interview and provided use information for the previous 5 days

ArmMeasureGroupValue (NUMBER)
Naproxen Sodium ER (BAYH6689)Number of Subjects With and Without More Than One Tablet Taken Per Dosenever took more than one tablet per dose440 participants
Naproxen Sodium ER (BAYH6689)Number of Subjects With and Without More Than One Tablet Taken Per Dosetook more than one tablet per dose27 participants
Secondary

Number of Subjects With and Without Next Dose Less Than 22 Hours Later

This Outcome is a measure of subjects while Outcome Measure 3 provides the outcome as a measure of cumulative number of use-days for all subjects involved.

Time frame: 1 month

Population: Number of subjects reflects subjects that completed at least one interview and provided use information for the previous 5 days

ArmMeasureGroupValue (NUMBER)
Naproxen Sodium ER (BAYH6689)Number of Subjects With and Without Next Dose Less Than 22 Hours Laterno doses less than 22 hours later359 participants
Naproxen Sodium ER (BAYH6689)Number of Subjects With and Without Next Dose Less Than 22 Hours Laterat least one dose less than 22 hours later108 participants
Secondary

Number of Total Dosing Occasions Per Subject

Dosing occasion means a single occasion in which a subject reported consuming the study drug. Multiple dosing occasions were possible throughout one use-day. For example, if a subject took one tablet at 6 am this would result in one dosing occasion. If the same subject took one tablet later that same day at 8 pm this would result in a second dosing occasion.

Time frame: 1 month

Population: Number of subjects reflects subjects that completed at least one interview and provided use information for the previous 5 days

ArmMeasureValue (MEAN)Dispersion
Naproxen Sodium ER (BAYH6689)Number of Total Dosing Occasions Per Subject5.5 dosing occasionsStandard Deviation 3.7
Secondary

Use Days With and Without Next Dose Less Than 22 Hours Later

Use-days were calculated based on days in which there was subject-reported product consumption, meaning that if a tablet was consumed on a day this resulted in one use-day. If a subject reported product consumption on three different days this resulted in three use-days. The cumulative expression of use-days is the total number of use-days reported by all subjects with follow up data.

Time frame: 1 month

Population: Number of subjects reflects subjects that completed at least one interview and provided use information for the previous 5 days

ArmMeasureGroupValue (NUMBER)
Naproxen Sodium ER (BAYH6689)Use Days With and Without Next Dose Less Than 22 Hours Laterno dose less than 22 hours later2175 days
Naproxen Sodium ER (BAYH6689)Use Days With and Without Next Dose Less Than 22 Hours Laterat least one dose less than 22 hours later231 days

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026