Model I | Model II | Model III | ||||
---|---|---|---|---|---|---|
Demographic + region | Model I + socioeconomic and physical conditions | Model II + social integration | ||||
OR | 95% C. I. | OR | 95% C. I. | OR | 95% C. I. | |
Gender | 0.819 | 0.648–1.034 | 0.836 | 0.661–1.058 | 0.889 | 0.698–1.134 |
Age (years) | ||||||
60–64 | 1.0 | – | 1.0 | – | 1.0 | – |
65–69 | 1.259 | 0.962–1.648 | 1.257 | 0.959–1.649 | 1.403* | 1.058–1.861 |
70–74 | 1.295 | 0.924–1.815 | 1.315 | 0.935–1.851 | 1.420 | 0.999–2.018 |
75–79 | 1.665* | 1.105–2.510 | 1.804** | 1.182–2.754 | 2.099*** | 1.349–3.265 |
80- | 1.617 | 0.862–3.036 | 1.782 | 0.940–3.380 | 2.171* | 1.111–4.243 |
Education | ||||||
Primary school or below | 10 | – | 1.0 | – | 1.0 | – |
Middle and high schools | 1.240 | 0.970–1.585 | 1.258 | 0.982–1.611 | 1.214 | 0.925–1.594 |
College and above | 1.334 | 0.917–1.941 | 1.363 | 0.935–1.851 | 1.245 | 0.814–1.905 |
Marital status | ||||||
Married | 1.0 | – | 1.0 | – | 1.0 | – |
Single | 0.949 | 0.707–1.257 | 0.987 | 0.734–1.329 | 1.008 | 0.740–1.374 |
Region classification | ||||||
Eastern region | 1.0 | – | 1.0 | – | 1.0 | – |
Central region | 1.331 | 0.693–2.556 | 1.328 | 0.690–2.557 | 1.312 | 0.662–2.597 |
Western region | 4.525*** | 3.195–6.409 | 4.650*** | 3.268–6.617 | 4.191*** | 2.902–6.053 |
Northeast region | 1.500* | 1.073–2.097 | 1.544** | 1.101–2.165 | 1.555* | 1.093–2.211 |
Average monthly household income | – | – | 0.846* | 0.722–0.991 | 0.885 | 0.758–1.033 |
Self-perceived health | ||||||
Healthy | – | – | 1.0 | – | 1.0 | – |
Basically healthy | – | – | 0.862 | 0.683–1.089 | 0.866 | 0.680–1.103 |
Unhealthy, but can take care of themselves | – | – | 0.890 | 0.512–1.574 | 1.011 | 0.567–1.805 |
Cannot take care of themselves | – | – | 0.104* | 0.013–0.861 | 0.211 | 0.024–1.865 |
Medical insurance | ||||||
None | – | – | – | – | 1.0 | – |
NCMS | – | – | – | – | 1.560* | 1.016–2.394 |
Urban and Rural Resident Cooperative Medical Insurance | – | – | – | – | 2.370* | 1.213–4.632 |
URBMI | – | – | – | – | 1.062 | 0.609–1.852 |
UEBMI | – | – | – | – | 1.260 | 0.779–2.037 |
Free Medical Care | – | – | – | – | 0.842 | 0.344–2.060 |
Number of local friends | ||||||
0 | – | – | – | – | −1.0 | – |
1–2 | – | – | – | – | 2.859*** | 1.677–4.875 |
3–4 | – | – | – | – | 3.318*** | 1.943–5.665 |
5–6 | – | – | – | – | 3.945*** | 2.341–6.648 |
7–8 | – | – | – | – | 4.391*** | 2.320–8.309 |
9–10 | – | – | – | – | 4.377*** | 2.580–7.426 |
Above 10 | – | – | – | – | 4.607*** | 2.709–7.834 |
Exercise time per day | ||||||
0 minites | – | – | – | – | 1.0 | – |
Within 30 min | – | – | – | – | 1.661 | 0.852–3.238 |
31–60 min | – | – | – | – | 1.804 | 0.943–3.451 |
61–90 min | – | – | – | – | 3.515** | 1.538–8.032 |
91–120 min | – | – | – | – | 1.526 | 0.777–2.997 |
Over 120 min | – | – | – | – | 1.320 | 0.613–2.840 |