The Pearl Pregnancy Index reexamined: Still useful for clinical trials of contraceptives
- 1 March 1981
- journal article
- research article
- Published by Elsevier in American Journal of Obstetrics and Gynecology
- Vol. 139 (5) , 592-596
- https://doi.org/10.1016/0002-9378(81)90522-6
Abstract
No abstract availableThis publication has 13 references indexed in Scilit:
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- Characteristics of a Ratio Used to Estimate Failure Rates: Occurrences Per Person Year of ExposureBiometrics, 1966