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Table 2 Logistic regression analysisa of significant risk factors associated with primary dysmenorrhea

From: Prevalence, risk factors, and management practices of primary dysmenorrhea among young females

Risk factor B SE Wald AOR 95% CI P
Constant − 2.4 0.55 18.78 0.08   < 0.001b
Academic specialization (reference: non-medical)
 Medical 0.50 0.25 4.10 1.66 1.01–2.72 0.04b
Parity (reference: nulliparous)
 Parous − 1.68 0.45 13.79 0.18 0.07–0.45 < 0.001b
Family history of dysmenorrhea (reference: no)
 Yes 0.92 0.25 13.29 2.52 1.53–4.16 < 0.001b
Weight loss attempt (reference: no)
 Yes 0.72 0.24 8.47 2.05 1.26–3.34 0.004b
The intensity of blood flow (reference: light)
 Moderate (average) 1.06 0.43 5.96 2.89 1.23–6.79 0.01b
 Heavy 2.33 0.60 14.95 10.28 3.15–33.49 < 0.001b
  1. AOR adjusted odds ratio, B coefficient for the constant in the null model, CI confidence interval, SE standard error, Wald Wald chi-square test that tests the null hypothesis that the constant equals 0
  2. aBinary logistic regression analysis was conducted using significant variables associated with dysmenorrhea, using backward stepwise analysis. Hosmer and Lemeshow test: 11.857
  3. bStatistically significant (P < 0.05)