Table 3. Risk ratios for sick leave due to depression by scores of stress response of BJSQ.

Score for stress response of BJSQ	No. of participants	Person -years	No. of sick leave related to depression	Sick leave rate per 1,000 person-years	Model 1	Model 2	Model 3	Model 4
Total stress response of BJSQ
Low (Q1–Q3)	1343	2444.3	7	2.86	1.00	1.00	1.00	1.00
High (Q4)	467	822.2	7	8.51	2.96 (1.04–8.42)	2.94 (1.03–8.40)	2.86 (1.00–8.18)	2.97 (1.04–8.49)
P for trend					0.002	0.002	0.002	0.002
Total psychological stress response of BJSQ
Low (Q1–Q3)	1371	2497.3	7	2.80	1.00	1.00	1.00	1.00
High (Q4)	439	769.2	7	9.10	3.22 (1.13–9.18)	3.12 (1.09–8.90)	3.01 (1.05–8.64)	3.19 (1.11–9.16)
P for trend					0.001	0.001	0.001	0.001
Total physical stress response of BJSQ
Low (Q1–Q3)	1364	2486.5	8	3.22	1.00	1.00	1.00	1.00
High (Q4)	446	780.0	6	7.69	2.37 (0.82–6.83)	2.45 (0.85–7.08)	2.40 (0.83–6.92)	2.42 (0.84–6.99)
P for trend					0.036	0.029	0.034	0.032

Model 1: Not adjusted.

Model 2: Adjusted for gender and age.

Model 3: Adjusted for gender and marriage.

Model 4: Adjusted for gender and child.

BJSQ: Brief Job Stress Questionnaire.

P for trend :Analyses scores of stress response as continuous variables.