Table 1.

Demographic and clinical characteristics of the participants (n = 539)

	Mean ± SD or n (%)
Age (years)	32.97 ± 5.34
Sex
Male	249 (46.2)
Female	290 (53.8)
Educational level
Primary	92 (17.1)
Secondary	175 (32.5)
University	272 (50.4)
Duration of infertility (years)	5.55 ± 4.07
Cause of infertility
Male factor	223 (41.4)
Female factor	95 (17.6)
Both	112 (20.8)
Unexplained	109 (20.2)
Failure of previous treatment
No	253 (46.9)
Yes	286 (53.1)
History of abortion
No	382 (70.9)
Yes	157 (29.1)

SD Standard deviation