Table 1.
Demographic characteristics of sample and severe mental stress prevalence.
| Group | N | % of sample | Prevalence | Unadjusted OR |
|---|---|---|---|---|
| Age (years) | ||||
| <20 | 1,890 | 12.8 | 34.5 | 1.00 |
| 20–20.9 | 1,862 | 24.9 | 34.3 | 0.91 (0.53, 1.56) |
| 21–21.9 | 2,128 | 23.8 | 44.3 | 1.38 (0.62, 3.01) |
| 22–22.9 | 2,448 | 14.7 | 34.8 | 0.93 (0.47, 1.82) |
| 23 and over | 2,456 | 10.2 | 26.8 | 0.64 (0.28, 1.45) |
| Gender | ||||
| Male | 4,249 | 49.4 | 35.6 | 1.00 |
| Female | 7,693 | 50.6 | 38.3 | 1.12 (0.58, 2.16) |
| Grade | ||||
| 1–2 | 4,945 | 60.7 | 36.0 | 1.00 |
| 3–4 | 6,717 | 38.5 | 39.5 | 1.16 (0.49, 2.74) |
| 5 and over | 292 | 0.8 | 17.3 | 0.39 (0.16, 0.90)* |
| Ethnicity | ||||
| Han | 11,136 | 94.5 | 36.2 | 1.00 |
| Minority | 806 | 4.2 | 37.9 | 0.90 (0.44, 1.85) |
| Major | ||||
| Medical | 10,507 | 81.1 | 32.6 | 1.00 |
| Others | 1,435 | 18.9 | 37.9 | 1.26 (0.66, 2.41) |
| Income in each person in family (RMB)# | ||||
| <10,000 | 1,811 | 34.3 | 38.4 | 1.00 |
| 10,000–19,999 | 1,273 | 21.7 | 42.0 | 1.66 (0.85, 1.59) |
| 20,000 and over | 1,932 | 44.7 | 33.6 | 0.81 (0.64, 0.97)* |
| UNIVERSITY VARIABLES | ||||
| Universities types | ||||
| High level | 4,283 | 58.9 | 36.9 | 1.00 |
| Middle level | 6,961 | 38.7 | 35.4 | 0.93 (0.31, 2.82) |
| Low level | 698 | 2.4 | 64.1 | 3.05 (1.45, 6.44)** |
| REGIONAL VARIABLES | ||||
| Original region GDP (RMB)# | ||||
| <50,000 | 5,980 | 52.1 | 38.3 | 1.00 |
| 50,000–99,999 | 3,550 | 26.3 | 37.0 | 0.95 (0.31, 2.86) |
| 100,000 and over | 2,402 | 21.6 | 33.6 | 0.93 (0.61, 1.42) |
| University city GDP (RMB)# | ||||
| <50,000 | 4,055 | 13.9 | 31.5 | 1.00 |
| 50,000–99,999 | 6,371 | 61.1 | 37.6 | 1.31 (0.48, 3.59) |
| 100,000 and over | 1,516 | 22.9 | 38.9 | 1.38 (0.29, 6.67) |
| City population (million) | ||||
| <1 | 3,084 | 12.2 | 46.1 | 1.00 |
| 1–3,999 | 5,980 | 57.5 | 42.3 | 0.85 (0.29, 2.45) |
| 4 and over | 2,878 | 30.3 | 23.1 | 0.35 (0.16, 0.77)** |
| Air pollution status | ||||
| <15 | 3,002 | 25.7 | 23.2 | 1.00 |
| 15–25 | 2,140 | 16.5 | 45.5 | 1.57 (1.09, 2.26)* |
| ≥25 | 6,800 | 57.9 | 40.6 | 1.74 (1.19, 2.56)** |
*
P <0.05,
**
P <0.01.
#
Chinese currency name.