If 10 women use IUCD for 10 years and assuming the failure rate of IUCD at 2/HWY, the number of expected accidental pregnancies would be-
- Given PI=2 ; Time =10 x 12 =120 months ; No. of women = 10 - Number of expected accidental pregnancies = Pearl Index X Time X No. of women / 1200 = 2 x 120 x 10 / 1200 = 2
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