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Table 1 Characteristics of the sample according to whether the participants had menstrual-related migraine or not

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

  MM
N = 52
nMM
N = 228
P-value
Parity
 Nulliparous 27 (51.9%) 134 (58.8%) 0.367
 Multiparous 25 (48.1%) 94 (41.2%)
Educationa
 Primary/secondary school 15 (32.6%) 77 (35.0%) 0.756
 Higher education 31 (67.4%) 143 (65.0%)
Menstrual cycleb
 Regular 47 (90.4%) 208 (92.0%) 0.697
 Irregular 5 (9.6%) 18 (8.0%)
Hormonal contraceptionc
 No 47 (90.4%) 198 (87.2%) 0.530
 Yes 5 (9.6%) 29 (12.8%)
PMS
 No 40 (76.9%) 170 (74.6%) 0.723
 Yes 12 (23.1%) 58 (25.4%)
Breast feedingd
 No 7 (13.5%) 36 (15.9%) 0.657
 Yes 45 (86.5%) 190 (84.1%)
  mean ± SD  
 Maternal age 32.2 ± 4.5 31.5 ± 4.6 0.281
 Age of menarche 12.9 ± 1.2 12.8 ± 1.4 0.725
 Menstrual pain (0–10) 3.7 ± 2.2 3.7 ± 2.3 0.901
  1. PMS Pre-Menstrual Syndrom, SD Standard Deviation, MM Menstrual Migraine, nMM Non-Menstrual Migraine
  2. a 14 missing values
  3. b 2 missing values
  4. c 1 missing value
  5. d 2 missing values