Table 7 Regression results for WeChat usage and mediating variables

WeChat usage

2.137^***

0.552^***

2.078^***

2.103^***

(1.880–2.429)

(0.036)

(1.836–2.353)

(1.877–2.356)

Age

0.991

−0.005

0.993

0.995

(0.981–1.001)

(0.003)

(0.984–1.003)

(0.986–1.004)

Gender (Male)

0.698^***

−0.246^***

0.601^***

0.589^***

(0.574–0.850)

(0.056)

(0.496–0.729)

(0.493–0.704)

Marital status (Married)

0.981

0.043

1.051

1.109

(0.766–1.257)

(0.071)

(0.825–1.339)

(0.888–1.385)

Residence (Urban)

0.939

0.041

0.907

0.966

(0.818–1.078)

(0.040)

(0.792–1.038)

(0.853–1.094)

 Elementary school

1.497

0.286^*

1.692^*

1.695^*

(0.991–2.262)

(0.122)

(1.107–2.584)

(1.124–2.555)

 Middle school

1.988^**

0.463^***

2.246^***

2.137^***

(1.316–3.003)

(0.121)

(1.471–3.430)

(1.419–3.218)

 High school

2.306^***

0.613^***

2.453^***

2.458^***

(1.510–3.523)

(0.124)

(1.591–3.783)

(1.618–3.734)

 College or above

3.233^***

1.010^***

3.343^***

3.488^***

(1.930–5.415)

(0.145)

(2.003–5.579)

(2.160–5.632)

 Poor

0.810

0.002

0.845

0.957

(0.546–1.200)

(0.114)

(0.574–1.243)

(0.670–1.368)

 Fair

0.964

0.141

0.994

1.105

(0.665–1.397)

(0.107)

(0.691–1.431)

(0.792–1.543)

 Good

1.351

0.341^**

1.328

1.464^*

(0.905–2.017)

(0.115)

(0.897–1.965)

(1.024–2.094)

 Very good

1.202

0.333^**

1.284

1.442^*

(0.805–1.796)

(0.116)

(0.866–1.903)

(1.005–2.068)

ADL (Impaired)

0.846

− 0.203

0.833

0.746

(0.535–1.337)

(0.134)

(0.529–1.312)

(0.489–1.138)

 Quit

0.879

−0.093

0.910

0.906

(0.716–1.079)

(0.059)

(0.744–1.112)

(0.754–1.089)

 No

0.838

−0.114^*

0.773^**

0.742^***

0.691–1.015)

(0.055)

(0.641–0.933)

(0.624–0.881)

Drink status (Yes)

1.493^***

0.244^***

1.508^***

1.464^***

(1.293–1.726)

(0.041)

(1.309–1.737)

(1.286–1.666)

Sleep time

1.193

0.103

1.313^*

1.291^*

(0.955–1.490)

(0.064)

(1.054–1.637)

(1.051–1.585)

Employment (Yes)

0.829^*

− 0.029

0.815^*

0.770^***

(0.702–0.980)

(0.048)

(0.692–0.959)

(0.662–0.894)

Pension insurance (Yes)

1.146

0.092

1.092

1.072

(0.911–1.442)

(0.067)

(0.869–1.370)

(0.867–1.327)

Medical insurance (Yes)

1.308

0.189

1.243

1.292

(0.847–2.019)

(0.128)

(0.805–1.919)

(0.860–1.942)

 One

1.197^*

0.126^*

1.146

1.178^*

(1.008–1.422)

(0.050)

(0.967–1.357)

(1.007–1.377)

 Two

1.377^**

0.193^***

1.302^**

1.294^**

(1.136–1.669)

(0.055)

(1.079–1.573)

(1.090–1.537)

 Three

1.636^***

0.267^***

1.495^***

1.504^***

(1.304–2.053)

(0.064)

(1.199–1.866)

(1.230–1.838)

 Four and more

1.742^***

0.474^***

1.633^***

1.745^***

(1.395–2.176)

(0.064)

(1.314–2.029)

(1.431–2.130)

Constant

0.509

−0.028

0.315^*

(0.186–1.390)

(0.292)

(0.116–0.856)

N

4545

4545

4545

4545