Table 1.
Demographic and clinical characteristics of the study sample
| Male | Female | All | |
|---|---|---|---|
| n = 256 | n = 175 | n = 431 | |
| n (%) | n (%) | n (%) | |
| Agea (years) | |||
| 30 and 35 | 53 (20.7) | 39 (22.3) | 92 (21.4) |
| 40 and 45 | 58 (22.7) | 43 (24.6) | 101 (25.1) |
| 50 and 55 | 63 (24.6) | 47 (26.9) | 110 (25.5) |
| 60 and 65 | 82 (32.0) | 46 (26.3) | 128 (28.0) |
| Depression | |||
| Yes | 19 (7.5) | 17 (9.7) | 36 (8.4) |
| No | 234 (92.5) | 158 (90.3) | 392 (91.6) |
| Body mass index (kg/m2) | |||
| <18.5 | 0 (0) | 1 (0.6) | 1 (0.2) |
| 18.5–24.9 | 47 (18.4) | 51 (29.1) | 98 (22.7) |
| 25.0–29.9 | 97 (37.9) | 64 (36.6) | 161 (37.4) |
| ≥30.0 | 112 (43.8) | 59 (33.7) | 171 (39.7) |
| Excessive daytime sleepiness | |||
| Yes | 72 (28.2) | 54 (30.9) | 126 (29.3) |
| No | 183 (71.8) | 121 (69.1) | 304 (70.7) |
| Obstructive sleep apnea (AHI ≥5) | |||
| Yes | 168 (65.6) | 73 (41.6) | 241 (55.9) |
| No | 88 (34.4) | 102 (58.3) | 190 (44.1) |
| AHI ≥15 | |||
| Yes | 104 (40.6) | 33 (18.9) | 137 (31.8) |
| No | 152 (59.4) | 142 (81.1) | 294 (68.2) |
| AHI ≥30 | |||
| Yes | 60 (23.4) | 10 (5.7) | 70 (16.2) |
| No | 196 (76.6) | 165 (94.3) | 361 (83.8) |
| Tension-type headache | |||
| 0–11 days per year | 210 (82.0) | 108 (61.7) | 318 (73.8) |
| 12–179 days per year | 43 (16.8) | 62 (35.4) | 105 (24.4) |
| ≥180 days per year | 3 (1.2) | 5 (2.9) | 8 (1.9) |
aAge at sampling of questionnaire data