Table 1.

Maternal and obstetrical characteristics of primiparous women with suspected grade 2–3 obstetric lacerations

	Study population (n = 150)	Target population (n = 1399)	p value
Age, mean (SD)	29.79(4.22)	29.41 (4.68)	0.19
Body mass index, mean (SD)	24.16 (4.24)	24.48 (4.48)	0.43
Gestational week, mean (SD)	39.96 (1.41)	39.50 (1.87)	0.04
Smoking in early pregnancy	2	55	na
Living with a partner	140	1161	0.17*

*Pearson chi-square test = 2, 1, df 1