Table 1.
Demographic characteristics of undergraduate students in Chongqing, China, 2018 (n = 788, response rate: 98.5%)
| Variable | Number | Percentage (mean ± SD) |
|---|---|---|
| Age | 788 | 19.8 ± 1.1 |
| Grade | ||
| Grade 1 | 212 | 26.9% |
| Grade 2 | 255 | 32.4% |
| Grade 3 | 321 | 40.7% |
| Gender | ||
| Male | 271 | 34.4% |
| Female | 517 | 65.6% |
| Residence | ||
| School | 722 | 91.6% |
| Apartments | 26 | 3.3% |
| Home | 40 | 5.1% |
| Type of university | ||
| Chongqing University | 199 | 25.3% |
| Chongqing Normal University | 207 | 26.3% |
| Southwest Politics and Law University | 174 | 22.1% |
| Chongqing Foreign Language University | 208 | 26.4% |
| BMI value | ||
| BMI < 18.5(underweight) | 158 | 20.1% |
| 18.5 ≤ BMI < 24(normal weight) | 585 | 74.2% |
| 24 ≤ BMI < 28 (overweight) | 32 | 4.1% |
| BMI ≥ 28(obesity) | 13 | 1.6% |
| Sleep duration (hours) | 788 | 7.6 ± 1.1 |
| Chronotype | ||
| Morningness | 172 | 21.8% |
| Intermediate | 495 | 62.8% |
| Eveningness | 121 | 15.4% |
| Sugary beverage intake daily (L/day) | 788 | 0.7 ± 0.5 |
| Physical exercise time (hours) | 788 | 4.6 ± 2.9 |
| DASS-21 | ||
| Depression | ||
| Low | 707 | 89.7% |
| Middle | 77 | 9.7% |
| High | 4 | 0.5% |
| Stress | ||
| Low | 267 | 33.8% |
| Middle | 514 | 65.2% |
| High | 7 | 0.8% |
| Anxiety | ||
| Low | 627 | 79.6% |
| Middle | 151 | 19.2% |
| High | 10 | 1.3% |