Table 2 Generalized estimation equation for depressive symptoms (N = 1875)

Intercept

0.18

0.20

0.363

 T0

0^a

 T1

0.46

0.03

< 0.001

 T2

0.81

0.05

< 0.001

 T3

1.48

0.07

< 0.001

 45 ~ 50

0^a

 51 ~ 55

0.14

0.12

0.249

 56 ~ 60

0.77

0.13

< 0.001

 Primary and below

0^a

 Junior

0.27

0.11

0.068

 Senior

1.33

0.22

0.076

 College and above

0.29

0.15

0.059

  ≤ 1000

0^a

 1001 ~ 3000

−0.86

0.16

< 0.001

  ≥ 3001

− 0.85

0.18

< 0.001

 Married

0^a

 Divorced

0.11

0.14

0.467

 Widowed

1.11

0.14

< 0.001

 Single

2.29

0.23

< 0.001

 Yes

1.23

0.12

< 0.001

 No

0^a

 Yes

2.45

0.13

< 0.001

 No

0^a