Clomiphene citrate in the management of male hypofertility: predictors for treatment selection.

All males treated with long-term, low-dose clomiphene citrate retrospectively were categorized as having pregerminal, primary germinal, or postgerminal hypofertility and their response to treatment was observed. Among couples in which no female factor could be identified and the husband was categorized as demonstrating pregerminal hypofertility, a pregnancy rate of 42% was established after treatment.