Table 1 Maternal characteristics of study population according to ICHD-II criteria migraine (definitive + probable), April 2009-Dec 2010, Seattle, WA
Characteristics | Cohort | ICHD-II criteria for migraine (definitive + probable) | ||
|---|---|---|---|---|
(N = 500) | Yes (N = 149) | No (N = 351) | p-value | |
Maternal Age (years) | 33.4 ± 4.2 | 32.9 ± 4.4 | 33.6 ± 4.1 | 0.131 |
Maternal Age (years) | ||||
< 35 | 316 (63.2) | 102 (68.5) | 214 (61.0) | 0.112 |
≥ 35 | 184 (36.8) | 47 (31.5) | 137 (39.0) | |
Maternal Race/Ethnicity | ||||
Non-Hispanic White | 430 (86.0) | 126 (84.6) | 304 (86.6) | 0.593 |
African American | 8 (1.6) | 4 (2.7) | 4 (1.1) | |
Other | 57 (11.4) | 18 (12.1) | 39 (11.1) | |
Missing | 5 (1.0) | 1 (0.7) | 4 (1.1) | |
Annual Household Income ($) | ||||
<50,000 | 20 (4.0) | 6 (4.0) | 14 (4.0) | 0.061 |
50,000-69,000 | 33 (6.6) | 13 (8.7) | 20 (5.7) | |
≥ 70,000 | 428 (85.6) | 129 (86.6) | 299 (85.2) | |
Missing | 19 (3.8) | 1 (0.7) | 18 (5.1) | |
Single Marital Status | 48 (9.6) | 19 (12.8) | 29 (8.3) | 0.119 |
Nulliparous | 261 (52.2) | 81 (54.4) | 180 (51.3) | 0.528 |
Unplanned Pregnancy | 72 (14.4) | 24 (16.1) | 48 (13.7) | 0.479 |
Cigarette Smoker during early pregnancy | 95 (19.0) | 30 (20.1) | 65 (18.5) | 0.674 |
Family History of Headache/Migraine | 220 (44.0) | 97 (65.1) | 123 (35.0) | <0.001 |
History of Chronic Hypertension | 11 (2.2) | 7 (4.7) | 4 (1.1) | 0.020 |
Pre-Pregnancy Body Mass Index (kg/m2) | 23.5 ± 4.7 | 24.7 ± 5.4 | 23.0 ± 4.3 | <0.001 |
Pre-Pregnancy Body Mass Index (kg/m2) | ||||
<18.5 | 24 (4.8) | 5 (3.4) | 19 (5.4) | 0.012 |
18.5-24.9 | 340 (68.0) | 89 (59.7) | 251 (71.5) | |
25.0-29.9 | 92 (18.4) | 34 (22.8) | 58 (16.5) | |
≥ 30.0 | 42 (8.4) | 20 (13.4) | 22 (6.3) | |
Missing | 2 (0.4) | 1 (0.7) | 1 (0.3) | |