Table 1 Sample characteristics
From: Insomnia and its correlates in a representative sample of the Greek population
| Â | N (%) |
|---|---|
Sex | Â |
   Men | 483 (48.1) |
   Women | 522 (51.9) |
Age (years) | Â |
   18-24 | 115 (11.4) |
   25-34 | 185 (18.4) |
   35-44 | 180 (17.9) |
   45-54 | 151 (15.0) |
   55-64 | 150 (14.9) |
   > 65 | 224 (22.3) |
Family status | Â |
   Married | 646 (64.3) |
   Single | 244 (24.3) |
   Divorced/Widowed | 115 (11.4) |
Socioeconomic status* | Â |
   Upper/upper middle (A/B-C1) | 168 (16.7) |
   Lower middle (C2) | 462 (46.0) |
   Lower (D/E) | 375 (37.3) |
Level of education | Â |
   Low | 334 (33.2) |
   Middle | 422 (42.0) |
   High | 249 (24.8) |
Alcohol use | Â |
   No | 453 (45.1) |
   Yes | 552 (54.9) |
Smoking | Â |
   No | 572 (56.9) |
   Yes | 433 (43.1) |
Physical activity | Â |
   No | 478 (50.5) |
   Yes | 469 (49.5) |
Weight status | Â |
   Normal (BMI < 25) | 416 (42.4) |
   Overweight (25<BMI < 30) | 404 (41.2) |
   Obese (BMI > 30) | 161 (16.4) |
Chronic disease | Â |
   No | 645 (64.2) |
   Yes | 360 (35.8) |
Hospitalizations in the past 12 months | Â |
   None | 880 (88.4) |
   One or more | 115 (11.6) |
Mental health problems | Â |
   Present | 50 (5.0) |
   Absent | 955 (95.0) |
SF-36 Mental health Component Score | Â |
   Individuals with mental problems | 37.6 (SD = 11.0) |
   Individuals without mental problems | 48.1 (SD = 8.9) |