Table 1.
Demographic characteristics of the study participants in Chongqing
| Demographic information | 2019 n (%) |
2021 n (%) |
Total | P value |
| Gender | ||||
| Male | 294 (36.6) | 179 (37.0) | 473 | 0.894 |
| Female | 509 (63.4) | 305 (63.0) | 814 | |
| GMI | ||||
| <¥4000 | 507 (63.1) | 275 (56.8) | 782 | 0.025 |
| ≥¥4000 | 296 (36.9) | 209 (43.2) | 505 | |
| Age | ||||
| 18–20 years old | 350 (43.6) | 177 (36.6) | 527 | 0.013 |
| 21–23 years old | 453 (56.4) | 307 (63.4) | 760 | |
| Grade level | ||||
| Lower division | 167 (20.8) | 39 (8.1) | 206 | <0.001 |
| Senior group | 636 (79.2) | 445 (91.9) | 1081 |
GMI, gross monthly income.