Table 3. Univariate and multivariate ordinal logistic regression of predictors for PHQ-4, N = 180.
| Factor | Univariate | Multivariate | ||||||
|---|---|---|---|---|---|---|---|---|
| p-value | Regression coefficient | 95% CI | p-value | Regression coefficient | 95% CI | |||
| Lower bound | Upper bound | Lower bound | Upper bound | |||||
| Gender | ||||||||
| Female | ref | ref | ref | ref | ref | ref | ||
| Male | 0.038* | -0.560 | -1.095 | -0.032 | 0.002* | -0.889 | -1.461 | -0.317 |
| SWLS | < 0.001* | -0.158 | -0.198 | -0.118 | < 0.001* | -0.161 | -0.204 | -0.119 |
| Number of on-calls/month | ||||||||
| 0 | ref | |||||||
| 1–2 | 0.086 | -1.816 | -3.889 | 0.256 | ||||
| 3–4 | 0.075 | -1.025 | -2.155 | 0.105 | ||||
| 5–6 | 0.6 | -0.246 | -1.167 | 0.674 | ||||
| > 6 | 0.21 | -0.550 | -1.407 | 0.307 | ||||
| Residency level | ||||||||
| R1 | ref | |||||||
| R2 | 0.008* | 0.968 | 0.25 | 1.687 | 0.385 | 0.340 | -0.427 | 1.106 |
| R3 | 0.33 | 0.391 | -0.395 | 1.176 | 0.984 | 0.009 | -0.816 | 0.833 |
| R4 | 0.1 | 0.657 | -0.13 | 1.444 | 0.479 | 0.308 | -0.545 | 1.160 |
| R5 | 0.62 | -0.270 | -1.349 | 0.810 | 0.185 | 0.185 | -0.918 | 1.288 |
PHQ-4: four-item Patient Health Questionnaire for anxiety and depression; ref: reference group; SWLS: Satisfaction with Life Scale; R: year of residency. *p < 0.05