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Social & Preventive Medicine Demography and family planning 511ee778

Pearls index

A
Per 10 woman years
B
Per 100 woman years
C
Per 1000 woman years
D
Per 10,000 woman years
High-Yield Explanation
Pearl index is defined as the number of failures per 100 woman years of exposure (HWY) Failure rate per Hundred Women Years = Total accidental pregnancies X 1200/ Total months of exposure Reference : Park&;s textbook of preventive and social medicine, 23rd edition, Page no: 510
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