Table 2.
Sleep habits of the study subjects.
| No. | Variable | Statistics* |
|---|---|---|
| 1. | When do you usually go to bed? | |
| 1. < 10 pm | 124 (31%) | |
| 2. 10 - 12 pm | 109 (27.3%) | |
| 3. > 12 pm | 167 (41.7%) | |
| 2. | How many hours of sleep do you usually have? | 6.4 ± 1.1 |
| 3. | When do you usually wake up? | |
| 1. < 6 am | 72 (18%) | |
| 2. 6 - 8 am | 189 (47.3%) | |
| 3. > 8 am | 139 (34.7%) | |
| 4. | Do you drink coffee late at night? | |
| 1. Never | 234 (58.5%) | |
| 2. < once per week | 53 (13.2%) | |
| 3. 1 - 2 per week | 43 (10.85) | |
| 4. 3 - 5 per week | 27 (6.8%) | |
| 5. nightly | 43 (10.8%) | |
| 5. | Have you ever taken sleeping pills | |
| 1. < once per week | 14 (3.5%) | |
| 2. Never | 386 (96.5%) | |