PLOD1 and cryptorchidism: According to Cox-related method (including age initiating treatment, BMI, peak LH, family history, cryptorchidism, basal testicular volume, prior androgen, prior gonadotropins), larger basal testicular volume (β = 0.142, P = 0.012) and noncryptorchidism history (β = 0.421, P = 0.028) were 2 favorable predictors for a shorter time to achieve spermatogenesis (Table 2).