Which of the following is impoant in calculation of pearl index
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
Number of aboions
Total accidental pregnancies
Socioeconomic status
Total gestational period
Demography and family planning