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Table 2 Results of the Generalized Estimating Equations (GEE) analyses

From: Characteristics of menstrual versus non-menstrual migraine during pregnancy: a longitudinal population-based study

  Pain intensity Unadjusted β coefficient (95% CI) P- value Pain intensity Adjusteda β coefficient (95% CI) P- value
Migraine status
 nMM Reference   Reference  
 MM 0.37 (0.04–0.71) 0.027 0.45 (0.08–0.82) 0.017
Time period
 Pregnancy week 17 Reference   Reference  
 Pregnancy week 32 −2.80 (−3.07- -2.53) < 0.001 −2.61 (−2.91- -2.31) < 0.001
 8 week after delivery −1.77 (− 2.01- -1.53) < 0.001 −1.54 (−1.83- -1.26) < 0.001
Menstrual pain 0.15 (0.09–0.20) < 0.001 0.16 (0.10–0.23) < 0.001
Menstrual cycle
 Normal Reference   Reference  
 Irregular 0.75 (0.11–1.40) 0.022 0.67 (0.05–1.29) 0.035
Analgesics use
 No Reference   Reference  
 Yes 1.26 (0.98–1.54) < 0.001 0.48 (0.19–0.77) 0.001
  1. MM Menstrual Migraine, nMM Non-Menstrual Migraine: aAdjusted for maternal age, parity, hormonal contraception, education; P-value< 0.05 were considered as statistically significant