| Regression coefficient (β) | 95 % confidence interval | p value |
---|---|---|---|
Mental quality of life | |||
Year of medical school | Â | Â | 0.01# |
 2nd year | Reference |  |  |
 3rd year | 1.06 | −0.91 to 3.02 | 0.29 |
 4th year | 1.12 | −0.84 to 3.10 | 0.26 |
 5th year | 4.37 | 2.11 to 6.64 | <0.01 |
 6th year | 1.56 | −0.49 to 3.61 | 0.14 |
Depression | Â | Â | <0.01# |
 No | Reference |  |  |
 Mild | −12.63 | −15.01 to −10.23 | <0.01 |
 Moderate to severe | −36.31 | −41.82 to −30.78 | <0.01 |