The duration of infertility affects semen parameters in primary infertile men: results of a single-centre, cross-sectional study.

This cross-sectional study showed that DI had a negative impact on semen parameters in primary infertile men. Sperm concentration was negatively associated with DI and patients with a longer DI reported higher rates of azoospermia. Furthermore, DI was significantly associated with a higher risk of oligozoospermia, low TMSC, and NOA.