Birth Control Effectiveness: The Pearl Index Explained

Learn all about birth control effectiveness as we take a look at perfect use, typical use, the Pearl Index, and more. Discover your body with Natural Cycles.

Pearl Index Calculator

Pearl Index Calculator

Efficacy and PK Data

Pearl index - interpreting number, discussion about pearls index and understanding the meaning of the numbers

Kyleena® IUD Effectiveness

Birth control effectiveness is calculated using the Pearl Index (PI). This represents the number of unintended pregnancies that occur whe

Effectiveness of Hormonal Contraceptives in Patients with Higher Weights – Birth Control Pharmacist

How do They Measure the Effectiveness of Birth Control? - Washington City Paper

Ius Photos and Images & Pictures

Previous contraceptive method prior to the study, as well as chosen