Table 1 Characteristics of study population
From: Epidemiological profiles of patients with chronic migraine and chronic tension-type headache
No headache | EM | CM | ETTH | CTTH | |
|---|---|---|---|---|---|
N = 4030 | N = 1601 | N = 108 | N = 1203 | N = 50 | |
age, years | |||||
mean, (SD) | 46.7 (12.8) | 40.4 (11.8) | 45.3 (12.9) | 41.1 (12.6) | 49.4 (13.9) |
min, max | 18, 66 | 5, 66 | 18, 66 | 18, 66 | 19, 65 |
missing, N | 2 | 1 | 0 | 1 | 0 |
gender, N (%) | |||||
men | 2408 (59.8) | 466 (29.1) | 29 (26.9) | 505 (42.0) | 26 (52.0) |
women | 1622 (40.2) | 1135 (79.9) | 79 (73.1) | 698 (58.0) | 24 (48.0) |
missing | 0 | 0 | 0 | 0 | 0 |
drinking a , N (%) | |||||
no | 3086 (76.6) | 1467 (91.6) | 97 (89.8) | 1069 (89.0) | 38 (76.0) |
yes | 555 (13.8) | 106 (6.6) | 8 (7.4) | 115 (9.5) | 11 (22.0) |
missing | 389 (9.6) | 28 (1.8) | 3 (2.8) | 19 (1.5) | 1 (2.0) |
smoking b , N (%) | |||||
no | 2581 (64.0) | 1071 (66.9) | 62 (57.4) | 839 (69.7) | 32 (64.0) |
yes | 1075 (26.7) | 513 (32.0) | 44 (40.7) | 350 (29.1) | 17 (34.0) |
missing | 374 (9.3) | 17 (1.1) | 2 (1.9) | 14 (1.2) | 1 (2.0) |
education c , N (%) | |||||
high* | 1005 (24.9) | 548 (34.2) | 20 (18.5) | 470 (39.1) | 12 (24.0) |
low | 2587 (64.1) | 1018 (63.6) | 86 (79.6) | 715 (59.4) | 38 (76.0) |
missing | 438 (12.1) | 35 (2.2) | 2 (1.9) | 18 (1.5) | 0 (0) |
BMI, N (%) | |||||
< 30 | 3090 (76.7) | 1367 (85.4) | 88 (81.5) | 1044 (86.8) | 43 (86.0) |
≥ 30 | 479 (11.9) | 192 (12.0) | 19 (17.6) | 129 (10.7) | 5 (10.0) |
missing | 461 (11.4) | 42 (2.6) | 1 (0.9) | 30 (2.5) | 2 (4.0) |
frequent medication intake d , N (%) | |||||
yes | 74 (1.8) | 105 (6.6) | 54 (50.0) | 33 (2.7) | 15 (30.0) |
no | 3442 (85.4) | 1337 (83.5) | 41 (38.0) | 1056 (87.8) | 30 (60.0) |
missing | 514 (12.8) | 159 (9.9) | 13 (12.0) | 114 (9.5) | 5 (10.0) |