Table 1.

Baseline demographic and fertility characteristics of the 77 couples included in the study.

Female age (years; mean ± SD, range)	35.3 ± 3.2, 20–38
Male age (years; mean ± SD, range)	38.6 ± 4.8, 30–53
Etiology of infertility (N, %)
Idiopathic	31/77, 40%
Female	10/77, 13%
Male	26/77, 34%
Combined	10/77, 13%
Male BMI (kg/m2, mean ± SD, range)	25.5 ± 3.1, 19.8–35.9
Male smoking habit (N, %)	26/77, 34%

SD, standard deviation; BMI, body max index.