Table 1. Basic characteristics of the subjects in this study.

Parameter	Mean ± S.D./Medians (ranges)
Age (years)	31.76 ± 6.11
BMI (kg/m2)	23.02 ± 1.49
Duration of infertility (years)	3.50 (1.00–12.00)
Sexual abstinence (days)	4.00 (3.00–5.00)
Semen volume (ml)	2.50 ± 0.54
Sperm concentration (×106/ml)	88.60 ± 29.98
Total sperm count (×106)	209.11 ± 139.32
Progressive motility (%)	43.23 ± 8.17
Normal sperm morphology (%)	8.74 ± 3.98

BMI, body mass index; N = 150; values are shown as the mean ± standard deviation/medians (ranges).