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References in periodicals archive ?
Continuous long term studies are required for evaluating pearl index.
The pregnancy rate using the Pearl Index calculated based on 28-day equivalent exposure cycles was the primary efficacy endpoint used to assess contraceptive reliability.
Kaunitz reported that there were no clinically meaningful differences in contraceptive efficacy among the intent-to-treat population between the oral contraceptive group and the AG200-15 group (a Pearl Index [PI] of 4.02 vs.