Table 3.

Comparison of sexual activity during menstruation in case and control groups based on bivariate and multivariate logistic regression

Variable	Unadjusted		Adjusted
	P value	OR (CI 95%)	P value	OR (CI 95%)
Vaginal sex activity	0.002	2.36 (1.36 to 4.09)	<0.001	5.23 (2.16 to 12.66)
Sexual activity without vaginal penetration	0.003	2.07(1.28 to 3.36)	0.010	2.90 (1.28 to 6.55)
Anal sex activity	0.075	0.25(0.05 to 1.14)	0.130	0.08 (0.03 to 2.09)

Conditional logistic regression was employed (P<0.1) in the multivariate analysis to control confounding variables: level of education, level of income, occupation, cycle length, cycle interval, pregnancy number, menarche age, age at first pregnancy, OCP user, IUD user, dysmenorrhea, dyspareunia, and recurrent vaginitis. CI; Confidence interval, OR; Odds ratio, OCP; Oral contraceptive pill, and IUD; Intrauterine device.