Table 1.
Participants’ (n = 490) socio-demographic, health-related, and sleep characteristics.
| Variable | N (%) | Mean (SD) |
|---|---|---|
| Sex | ||
| Women | 432 (88.2) | |
| Men | 58 (11.8) | |
| Age | 23.4 (2.4) | |
| Study course | ||
| Undergraduate | 411 (83.9) | |
| Postgraduate | 79 (16.1) | |
| Occupational situation | ||
| Full-time student | 363 (74.1) | |
| Part-time job | 92 (18.8) | |
| Full-time job | 35 (7.1) | |
| Living situation | ||
| With parents | 354 (72.2) | |
| With roommates/partner | 117 (23.9) | |
| Alone | 19 (3.9) | |
| Tobacco use | ||
| Yes | 252 (51.4) | |
| No | 238 (48.6) | |
| Excessive alcohol consumption | ||
| ≥2 per week | 64 (13.1) | |
| <2 per week | 426 (86.9) | |
| Physical exercise | ||
| ≥2 per week | 180 (36.7) | |
| <2 per week | 310 (63.3) | |
| BMI (kg/m2) | 22.5 (4.0) | |
| <18.5 (underweight) | 60 (12.2) | |
| 18.5 to 24.99 (normal weight) | 335 (68.4) | |
| ≥25 (overweight) | 95 (19.4) | |
| Total sleep time (hours) | 6.5 (1.1) | |
| Sleep-onset latency (minutes) | 48.5 (37.5) | |
| Sleep efficiency index (%) | 80.5 (11.9) | |
Note. BMI, body mass index. Sleep efficiency index in percentage was obtained dividing total sleep time for hours spent in bed.