Table 2. Multivariate analysis.

Variables	PR (95%CI)	p-value
Smoking history	1.28 (0.98–1.66)	0.071
Mode of delivery
None	1.00
Cesarean section	1.22 (0.83–1.79)	0.301
Vaginal	1.47 (1.01–2.12)	0.044
Both	1.41 (0.94–2.10)	0.095
Menopause	1.34 (1.03–1.76)	0.031
Weight excess	1.00 (0.99–1.01)	0.073

Abbreviations: 95%CI, 95% confidence interval; PR, prevalence ratio.