In a clinical trial, a new contraceptive method has a Pearl Index of 0.1. What does this mean?...

Question

In a clinical trial, a new contraceptive method has a Pearl Index of 0.1. What does this mean?

Accepted Answer

0.1 pregnancies occur per 100 women-years of use

Answer

0.1% of women will become pregnant per act of intercourse

Answer

0.1% of women using the method will experience a side effect

Answer

The method prevents ovulation in 0.1% of cycles

Answer

The method is 0.1% effective

uk-dfsrh MCQ (SBA): Pearl Index Definition