Table 1.

Selected women characteristics according to the study groups.

Characteristics	Pregnant (n = 40)	Non-pregnant (n = 40)	p value
Age, years	31.9 ± 4.1	31.7 ± 5.2	0.87
Gestational age	31.3 ± 6.3
Number of years of education	15 (12–20)	17 (12–22)	0.005
Smoking	2 (5.0)	10 (25.0)	0.012
Medications	6 (15.0)	8 (20.0)	0.55
Diseases	6 (15.0)	9 (22.5)	0.39

Data are presented as mean ± SD, median (range), or n (%).