Table 1. Predictors of faster suppression and recovery of sperm output after cessation of male hormonal contraception.

Independent predictors of eventual suppression of sperm output during male hormonal contraceptive

• Asian race

• Concurrent progestin use

• Lower body mass index

• Lower dose of testosterone

Independent predictors of faster suppression of sperm output

• Caucasian race

• Younger age

• Concurrent progestin use

• Shorter treatment duration

• Lower baseline sperm concentrations

• Lower baseline serum testosterone concentrations

• Depot testosterone preparations

Independent predictors of faster recovery of sperm output after cessation of MHC

• Asian race

• Older age

• Shorter treatment duration

• Higher baseline sperm concentrations

• Faster initial suppression of sperm output

• Lower baseline serum LH concentrations

• Shorter acting testosterone preparations

Abbreviations: LH, luteinizing hormone; MHC, male hormonal contraceptives.