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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