Table 1 General and psychosocial characteristics of the study population (n = 657)
From: Factors Related to Sleep Disorders among Male Firefighters
Variables | n | % |
|---|---|---|
Age (years) | ||
≤29 | 79 | 12.0 |
30 ~ 39 | 221 | 33.6 |
40 ~ 49 | 261 | 39.7 |
≥50 | 96 | 14.6 |
Tenure (years) | ||
<10 | 280 | 42.6 |
10 ~ 19 | 226 | 34.4 |
≥20 | 151 | 23.0 |
Marital status | ||
Unmarried | 135 | 20.5 |
Married | 522 | 79.5 |
Exercise | ||
No | 332 | 50.5 |
Yes | 325 | 49.5 |
Alcohol intake | ||
No | 264 | 40.2 |
Yes | 393 | 59.8 |
Smoking | ||
No | 517 | 78.7 |
Yes | 140 | 21.3 |
BMI* (kg/m2) | ||
<25 | 420 | 63.9 |
≥25 | 237 | 36.1 |
Department | ||
Administrative job | 158 | 24.0 |
Non-Administrative job | 499 | 76.0 |
Musculoskeletal symptoms | ||
No | 416 | 63.3 |
Yes | 241s | 36.7 |
Shift work | ||
No | 143 | 21.8 |
Yes | 514 | 78.2 |
Sleep quality | ||
Good | 337 | 51.3 |
Poor | 320 | 48.7 |
BDI-2† | ||
Normal range | 536 | 81.6 |
Abnormal range | 121 | 18.4 |
PWI-SF‡ | ||
Healthy group | 68 | 10.4 |
Latent stress group | 482 | 73.4 |
Stress group | 107 | 16.2 |