Table 3.

Correlations of continuous independent variables with depressive symptoms.

Variables	Mean ± SD	Correlation with depressive symptoms
Age	40.18 ± 9.25	−0.031
Weekly working time	50.97 ± 10.42	0.083**
ERI†	0.69 ± 0.24	0.368**
OC	15.29 ± 2.85	0.179**
PPE	30.51 ± 7.08	0.209**
WFC	3.37 ± 0.77	0.188**

ERI: effort-reward imbalance; OC: overcommitment; PPE: perceived physical environment; WFC: work-family conflict.

^†The mean of the ERI is logarithmic.

**P < 0.01.