Which of these is used to measure contraceptive efficacy?
Correct Answer: Pearl index
Description: The use-effectiveness of contraceptive method is expressed by Pearl rate . Pearl rate or pearl index was introduced by Raymond Pearl in 1932. It is calculated as: total accidental pregnancies x 1200 / number of women observed x total months of contraceptive use It is expessed as HWY (hundred women years) AFS ( American feility Society ) score predicts severity of endometriosis and risk of recurrence after surgery
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Gynaecology & Obstetrics
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