Table V.

Significant independent variables for dysmenorrhea according to logistic regression analysis.

Variables	β	SE	P	OR	95% CI
Constant	0.202	0.137	0.411
Coffee consumption (reference: no)
Yes	0.734	0.224	0.001	2.084	1.342–3.235
Menstrual bleeding duration (days) (reference: ≤6)
≥7	0.464	0.214	0.031	1.590	1.044–2.421
Family history (reference: No)
Yes	1.113	0.200	0.000	3.043	2.058–4.500

Hosmer and Lemeshow test: chi-square = 3.616; P = 0.606.