Table 3 Binary logistic regression results of WeChat usage, social participation and depression

WeChat usage

0.711^***

0.701^***

0.729^***

0.731^***

(0.620–0.816)

(0.605–0.812)

(0.628–0.846)

(0.629–0.850)

Social participation (Yes)

0.792^**

(0.683–0.919)

Levels of Social participation

0.922^*

(0.866–0.982)

Age

0.987^**

0.971^***

0.970^***

0.971^***

(0.978–0.997)

(0.960–0.983)

(0.959–0.982)

(0.959–0.982)

Gender (Male)

0.625^***

0.694^**

0.682^**

0.683^**

(0.546–0.717)

(0.552–0.873)

(0.542–0.857)

(0.543–0.859)

Marital status (Married)

0.666^**

0.784

0.782

0.784

(0.518–0.855)

(0.597–1.030)

(0.595–1.028)

(0.597–1.031)

Residence (Urban)

0.770^***

0.762^***

0.759^***

0.763^***

(0.668–0.887)

(0.649–0.894)

(0.646–0.890)

(0.650–0.896)

 Elementary school

1.013

1.046

1.070

1.069

(0.672–1.527)

(0.666–1.642)

(0.681–1.681)

(0.681–1.680)

 Middle school

0.658^*

0.724

0.752

0.750

(0.436–0.993)

(0.461–1.138)

(0.478–1.183)

(0.477–1.180)

 High school

0.524^**

0.595^*

0.622^*

0.623^*

(0.342–0.803)

(0.372–0.949)

(0.389–0.994)

(0.389–0.996)

 College or above

0.585^*

0.705

0.752

0.764

(0.346–0.992)

(0.398–1.250)

(0.423–1.336)

(0.429–1.360)

 Poor

0.648^*

0.641^*

0.649^*

(0.429–0.979)

(0.424–0.968)

(0.430–0.981)

 Fair

0.311^***

0.310^***

0.315^***

(0.211–0.459)

(0.210–0.457)

(0.213–0.464)

 Good

0.184^***

0.186^***

0.189^***

(0.119–0.283)

(0.121–0.287)

(0.122–0.291)

 Very good

0.120^***

0.121^***

0.123^***

(0.077–0.188)

(0.077–0.189)

(0.078–0.193)

ADL (Impaired)

2.693^***

2.690^***

2.660^***

(1.620–4.478)

(1.614–4.482)

(1.599–4.424)

 Quit

1.004

0.998

0.996

(0.785–1.284)

(0.780–1.276)

(0.779–1.274)

 No

1.058

1.048

1.047

(0.841–1.331)

(0.832–1.318)

(0.832–1.317)

Drink status (Yes)

0.928

0.945

0.943

(0.786–1.095)

(0.800–1.117)

(0.798–1.114)

Sleep time

0.297^***

0.300^***

0.300^***

(0.230–0.383)

(0.233–0.387)

(0.233–0.387)

Employment (Yes)

1.167

1.157

1.164

(0.963–1.414)

(0.955–1.402)

(0.960–1.410)

Pension insurance (Yes)

0.991

0.999

0.999

(0.762–1.289)

(0.768–1.300)

(0.768–1.299)

Medical insurance (Yes)

0.581^*

0.588^*

0.588^*

(0.355–0.949)

(0.360–0.961)

(0.360–0.960)

 One

1.128

1.135

1.136

(0.911–1.395)

(0.917–1.405)

(0.918–1.406)

 Two

1.299^*

1.322^*

1.320^*

(1.035–1.630)

(1.053–1.659)

(1.052–1.657)

 Three

1.646^***

1.689^***

1.680^***

(1.276–2.123)

(1.308–2.181)

(1.302–2.169)

 Four and more

2.000^***

2.062^***

2.074^***

(1.563–2.561)

(1.609–2.643)

(1.617–2.659)

Constant

2.661^**

172.044^***

187.642^***

173.886^***

(1.296–5.464)

(54.026–547.865)

(58.778–599.020)

(54.568–554.111)

N

4545

4545

4545

4545