Table 2.
Univariate analyses of factors associated with PMPU and SWLS.
| Variable | MPAI score | SWLS | ||||
|---|---|---|---|---|---|---|
| Mean ±SD | t/F | P | Mean ±SD | t/F | P | |
| Gender | −0.60 | 0.549 | 3.29 | 0.001 | ||
| Male | 38.00 ± 13.41 | 25.22 ± 6.84 | ||||
| Female | 38.46 ± 13.13 | 23.91 ± 6.67 | ||||
| Grade | 1.49 | 0.214 | 1.23 | 0.297 | ||
| Freshman | 37.14 ± 13.53 | 24.37 ± 7.04 | ||||
| Sophomore | 37.89 ± 13.54 | 24.86 ± 6.97 | ||||
| Junior | 38.65 ± 12.92 | 25.11 ± 6.42 | ||||
| Senior | 39.18 ± 13.38 | 25.31 ± 6.89 | ||||
| Place of hometown | 0.01 | 0.916 | 0.79 | 0.430 | ||
| Urban | 38.09 ± 13.52 | 24.97 ± 6.86 | ||||
| Rural | 38.17 ± 12.98 | 24.68 ± 6.74 | ||||
| Ethnic groups | −2.28 | 0.022 | 0.73 | 0.465 | ||
| Han | 37.89 ± 13.29 | 24.91 ± 6.81 | ||||
| Minority nationality | 40.84 ± 13.65 | 24.43 ± 6.89 | ||||
| Specialty | 4.65 | 0.003 | 7.08 | <0.001 | ||
| Engineering | 37.87 ± 12.49 | 24.10 ± 6.32 | ||||
| Science | 36.74 ± 14.21 | 25.87 ± 7.22 | ||||
| Economy | 37.72 ± 12.26 | 23.48 ± 6.32 | ||||
| Others | 40.02 ± 13.38 | 25.04 ± 6.89 | ||||
| Monthly allowances (RMB) | 6.19 | <0.001 | 1.57 | 0.166 | ||
| <1,000 | 34.34 ± 14.55 | 24.90 ± 8.56 | ||||
| 1,000–1,499 | 37.56 ± 12.70 | 24.45 ± 6.26 | ||||
| 1,500–1,999 | 38.06 ± 12.60 | 24.67 ± 6.46 | ||||
| 2,000–2,499 | 41.05 ± 13.63 | 25.54 ± 6.71 | ||||
| 2,500–2,999 | 40.37 ± 11.71 | 24.92 ± 6.58 | ||||
| ≥3,000 | 39.82 ± 15.17 | 26.04 ± 7.44 | ||||
| Relationship status | 8.12 | <0.001 | 6.40 | <0.001 | ||
| Not dating nor married | 36.78 ± 13.39 | 24.34 ± 6.75 | ||||
| Dating but unmarried | 39.58 ± 12.53 | 25.31 ± 6.68 | ||||
| Married | 42.48 ± 16.25 | 27.31 ± 7.71 | ||||
| Others | 41.87 ± 14.62 | 27.21 ± 7.49 | ||||
| Insomnia | 37.96 | <0.001 | 11.47 | <0.001 | ||
| No | 33.90 ± 13.17 | 26.17 ± 6.85 | ||||
| Seldom ( ≤ 3 times/month) | 39.22 ± 12.03 | 24.37 ± 6.39 | ||||
| Sometimes (1–2 times/week) | 41.80 ± 12.26 | 23.85 ± 6.10 | ||||
| Often (3–5 times/week) | 45.19 ± 12.74 | 22.78 ± 7.51 | ||||
| Daily (>5 times/week) | 48.59 ± 16.36 | 22.76 ± 10.02 | ||||
| Cigarette use | 17.86 | <0.001 | 1.11 | 0.331 | ||
| No | 37.11 ± 13.16 | 24.83 ± 6.71 | ||||
| Ex-smoker | 42.99 ± 12.15 | 25.48 ± 6.87 | ||||
| Current smoker | 40.33 ± 14.72 | 24.37 ± 7.67 | ||||
| Alcohol use | 10.63 | <0.001 | 4.18 | 0.002 | ||
| Never | 36.34 ± 13.51 | 25.42 ± 6.86 | ||||
| Rare ( ≤ 2 times/month) | 39.89 ± 12.47 | 23.81 ± 6.41 | ||||
| Sometimes ( ≤ 4 times/month) | 42.34 ± 11.92 | 25.01 ± 6.54 | ||||
| Often ( ≤ 12 times/month) | 42.19 ± 13.50 | 23.83 ± 7.61 | ||||
| Always (>12 times/month) | 38.48 ± 17.32 | 24.63 ± 9.37 | ||||
Bold value for p < 0.05.