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Table 1 Overview of maternal characteristics and analgesic use in pregnancy in the total study sample and in sub-samples according to migraine pattern

From: Patterns and predictors of analgesic use in pregnancy: a longitudinal drug utilization study with special focus on women with migraine

  Study sample Sub-samples according to migraine pattern
Total number of women No history of migraine Previous history of migraine Recent history of migraine Migraine in pregnancy
n = 1981 n (% of n) n = 1362 n (% of n) n = 227 n (% of n) n = 262 n (% of n) n = 100 n (% of n)
Maternal age at delivery
  < 25 165 (8.3) 119 (8.7) 12 (5.3) 16 (6.1) 15 (15.0)
 25–30 588 (29.7) 403 (29.6) 64 (28.2) 79 (30.2) 29 (29.0)
 31–35 768 (38.8) 529 (38.8) 95 (41.9) 100 (38.2) 38 (38.0)
  > 35 446 (22.5) 303 (22.2) 56 (24.7) 62 (23.7) 17 (17.0)
Parity
 First time mother 988 (49.9) 669 (49.1) 102 (44.9) 148 (56.5) 53 (53.0)
  ≥ 1 previous child 993 (50.1) 693 (50.9) 125 (55.1) 114 (43.5) 47 (47.0)
Marital status
 Married/cohabiting 1910 (96.4) 1318 (96.8) 222 (97.8) 246 (93.9) 94 (94.0)
 Single/divorced/separated 44 (2.2) 28 (2.1) 5 (2.2) 7 (2.7) 4 (4.0)
Education
 College/university 1294 (65.3) 905 (66.4) 146 (64.3) 160 (61.1) 61 (61.0)
 Primary/secondary school 606 (30.6) 406 (29.8) 69 (30.4) 86 (32.8) 37 (37.0)
Smoking at time of delivery
 No 1841 (92.9) 1280 (94.0) 211 (93.0) 235 (89.7) 87 (87.0)
 Yes 76 (3.8) 42 (3.1) 11 (4.8) 14 (5.3) 8 (8.0)
Alcohol in pregnancy
 No 1866 (94.2) 1282 (94.1) 210 (92.5) 255 (97.3) 93 (93.0)
 Yes 82 (4.1) 56 (4.1) 11 (4.8) 7 (2.7) 6 (6.0)
Symptoms of depression or anxiety in pregnancy
 No 1684 (85.0) 1184 (86.9) 192 (84.6) 218 (83.2) 68 (68.0)
 Yes 291 (14.7) 172 (12.6) 35 (15.4) 44 (16.8) 32 (32.0)
Chronic diseases
 None 831 (41.9) 590 (43.3) 92 (40.5) 102 (38.9) 34 (34.0)
 1 disease 747 (37.7) 506 (37.2) 94 (41.4) 95 (36.3) 40 (40.0)
 ≥ 2 diseases 392 (19.8) 260 (19.1) 41 (18.1) 61 (23.3) 25 (25.0)
Pregnancy related diseases
 None 1777 (89.7) 1221 (89.6) 212 (93.4) 229 (87.4) 87 (87.0)
  ≥ 1 disease 191 (9.6) 134 (9.8) 15 (6.6) 29 (11.1) 11 (11.0)
Somatic symptoms
 None 182 (9.2) 139 (10.2) 20 (8.8) 20 (7.6) 1 (1.0)
 1–2 symptoms 729 (36.8) 533 (39.1) 80 (35.2) 83 (31.7) 20 (20.0)
 3–4 symptoms 658 (33.2) 430 (31.6) 84 (37.0) 93 (35.5) 41 (41.0)
  ≥ 5 symptoms 412 (20.8) 260 (19.1) 43 (18.9) 66 (25.2) 38 (38.0)
Headache intensity
 Low 741 (37.4) 627 (46.0) 60 (26.4) 35 (13.4) 9 (9.0)
 Moderate 979 (49.4) 600 (44.1) 143 (63.0) 179 (68.3) 43 (43.0)
 High 183 (9.2) 61 (4.5) 22 (9.7) 48 (18.3) 48 (48.0)
Analgesics in pregnancy
 No 1004 (50.7) 766 (56.2) 107 (47.1) 90 (34.4) 28 (28.0)
 Yes 977 (49.3) 596 (43.8) 120 (52.9) 172 (65.6) 72 (72.0)
  1. Numbers do not add up to the total in each group due to missing values: migraine history n = 30 (1.5%), maternal age n = 14 (0.7%), marital status n = 27 (1.4%), education n = 81 (4.1%), smoking n = 64 (3.2%), alcohol n = 33 (1.7%), symptoms of depression/anxiety n = 6 (0.3%), headache intensity n = 78 (3.9%), chronic diseases n = 11 (0.6%), pregnancy related diseases n = 13 (0.7%)