Table 1.
General characteristics of total surveyed population and by questionnaire.
| Variable [n (%)] | Total (n=544) | PQSI (n=300) * | ESS (n=471) * | BQ (n=544) * | p-value |
|---|---|---|---|---|---|
| Age | |||||
| <16 | 5 (1) | 4 (1) | 5 (1) | 5 (1) | 0.96 |
| 16-18 | 138 (25) | 80 (27) | 121 (26) | 138 (25) | |
| 19-21 | 274 (50) | 161 (54) | 244 (52) | 274 (50) | |
| 22-24 | 103 (19) | 48 (16) | 85 (18) | 103 (19) | |
| >25 | 8 (2) | 2 (1) | 8 (2) | 8 (2) | |
| ND | 16 (3) | 5 (2) | 8 (2) | 16 (3) | |
| Gender | |||||
| Male | 197 (36) | 110 (37) | 173 (37) | 197 (36) | 0.88 |
| Female | 296 (54) | 170 (57) | 259 (55) | 296 (54) | |
| ND | 51 (9) | 20 (7) | 39 (8) | 51 (9) | |
| Currently working | |||||
| Yes | 15 (3) | 10 (3) | 10 (2) | 15 (3) | 0.25 |
| No | 513 (94) | 287 (96) | 455 (97) | 513 (94) | |
| ND | 16 (3) | 3 (1) | 6 (1) | 16 (3) | |
| Study stage | |||||
| Preclinical | 325 (60) | 185 (62) | 281 (60) | 325 (60) | 0.94 |
| Clinical | 219 (40) | 115 (38) | 190 (40) | 219 (40) | |
| Fulfilled DSM-IV Depression Criteria (n=529) * | |||||
| Yes | 139 (26) | - | - | - | - |
| No | 390 (74) | - | - | - | |
| GPA (n=450) * | |||||
| <4 | 227 (50) | - | - | - | - |
| >4 | 223 (50) | - | - | - |
*
Available complete questionnaires/answers.
Abbreviations: PSQI Pittsburgh Sleep Quality Index; ESS Epworth Sleepiness Scale; BQ Berlin Questionnaire; ND No data.