<prompt> Contraceptive Efficacy is measured by:-Pearl index onlyPearl index and Life table analysisLife table analysis and Couple protection ratePearl index and Couple protection rate  <response>: Contraceptive efficacy: Is assessed by measuring the number of unplanned pregnancies that occur during a specified period of exposure and use of a contraceptive method. Two methods used are: - Pearl index - Life table analysis Life table analysis as measure of contraceptive efficacy is a better measure than Pearl Index 