Table 2. Characteristics according to cumulative number of insomnia for men.
| Cumulative insomnia symptoms | ||||
| Variable | n | 0 | 1–2 | 3–4 |
| N = 1,783 | n = 1,345 | n = 380 | n = 58 | |
| Age (years) | 1,783 | 50.0 (13.2) | 51.4 (13.5) | 51.6 (11.3) |
| BMI (kg/m2) | 1,782 | 26.6 (3.0) | 26.8 (3.4) | 27.1 (3.1) |
| HADS anxiety score | 1,769 | 2.9 (2.5) | 4.8 (3.4) | 6.5 (4.1) |
| HADS depression score | 1,769 | 2.6 (2.5) | 4.1 (3.0) | 5.7 (3.6) |
| Physical activity index | 1,557 | 3.7 (2.8) | 3.4 (2.6) | 3.4 (3.1) |
| FMD (%) | 1,783 | 4.3 (3.8) | 4.0 (3.9) | 5.0 (4.1) |
| Smoking (%) | ||||
| Never | 901 | 53.0 | 45.7 | 49.1 |
| Previous | 488 | 26.6 | 32.1 | 29.1 |
| Current | 366 | 20.4 | 22.2 | 21.8 |
| Marital status (%) | ||||
| Never married | 444 | 25.2 | 23.3 | 31.0 |
| Married | 1,127 | 63.8 | 63.1 | 55.2 |
| Separated/divorced/widowed | 208 | 11.1 | 13.5 | 13.8 |
| Sleep-disordered breathing (%) | ||||
| Never/almost never | 1,543 | 88.9 | 83.2 | 80.7 |
| Sometimes | 164 | 8.8 | 11.0 | 10.5 |
| Several times a week | 58 | 2.3 | 5.9 | 8.8 |
| Snoring (%) | ||||
| Never/almost never | 735 | 42.1 | 38.8 | 44.8 |
| Sometimes | 700 | 40.9 | 36.7 | 25.9 |
| Several times a week | 337 | 17.0 | 24.5 | 29.3 |
| Alcohol intake (%) | ||||
| Abstainers | 285 | 16.1 | 18.8 | 25.5 |
| Light drinkers | 710 | 42.7 | 41.6 | 36.4 |
| Moderate drinkers | 430 | 25.7 | 24.5 | 30.9 |
| Heavy drinkers | 255 | 15.5 | 15.1 | 7.3 |
| Education (%) | ||||
| Primary | 191 | 10.2 | 12.5 | 12.1 |
| Secondary | 989 | 53.8 | 50.8 | 63.8 |
| Tertiary | 595 | 33.0 | 36.7 | 24.1 |