Table 3.
The univariate Cox analysis of all variables (demographic variables and social support) oncognitive impairment.
| Demographic variables | Social support | ||||
|---|---|---|---|---|---|
| SHR (95% CI) | p | SHR (95% CI) | p | ||
| Age | 1.084 (1.077–1.091) | <0.001 | Marital status | Reference (widowed) | |
| Gender | 0.786 (0.695–0.889) | <0.001 | Married | 0.790 (0.682–0.916) | 0.002 |
| Residence | Reference (rural) | Separated | 0.379 (0.218–0.658) | <0.001 | |
| City | 0.889 (0.756–1.045) | 0.155 | Divorced | 0.756 (0.282–2.025) | 0.578 |
| Town | 0.925 (0.793–1.080) | 0.325 | Never married | 1.555 (0.641–3.771) | 0.329 |
| Education | 0.989 (0.971–1.008) | 0.271 | Children's visit | 0.766 (0.652–0.900) | <0.001 |
| Negative well-being | 1.077 (1.049–1.106) | <0.001 | Children alive | 0.824 (0.613–1.108) | 0.201 |
| ADL | 1.135 (1.084–1.190) | <0.001 | Siblings' visit | 0.844 (0.734–0.972) | 0.018 |
| Drinking | 1.244 (1.080–1.434) | 0.003 | Siblings alive | 0.865 (0.758–0.986) | 0.030 |
| Smoking | 0.974 (0.838–1.132) | 0.730 | C_spouse | 0.984 (0.966–1.001) | 0.068 |
| Exercise | 0.979 (0.861–1.112) | 0.742 | C_children | 1.007 (0.985–1.030) | 0.540 |
| Disease | 1.124 (0.995–1.270) | 0.061 | C_children in law | 1.016 (0.987–1.045) | 0.290 |
| Occupation | Reference (labor) | C_relatives | 0.998 (0.950–1.048) | 0.923 | |
| Intellectual | 0.862 (0.689–1.079) | 0.195 | C_friends | 1.011 (0.977–1.044) | 0.549 |
| Others | 0.920 (0.655–1.291) | 0.629 | Money given | Reference (no) | |
| Baseline MMSE | 0.925 (0.907–0.943) | <0.001 | Yes | 0.820 (0.710–0.948) | 0.007 |
| Leisure activities | 0.956 (0.945–0.967) | <0.001 | Unknown | 1.050 (0.705–1.564) | 0.811 |
| Money received | Reference (no) | ||||
| Yes | 1.163 (0.950–1.424) | 0.143 | |||
| Unknown | 1.358 (0.906–2.038) | 0.139 | |||
| Sick care | Reference (no) | ||||
| Yes | 0.718 (0.504–1.021) | 0.065 | |||
| Unknown | 1.259 (0.798–1.987) | 0.322 | |||
| Social security | 0.864 (0.756–0.987) | 0.031 | |||
| Social service | 1.026 (0.899–1.170) | 0.706 | |||
All variables were included in model separately, after controlling for gender, age.
Married: married and living with the spouse; Separated: married and not living with the spouse; C_spouse: contacts with spouse; C_children: contacts with children; C_children in law: contacts with children-in-law; C_relatives: contacts with relatives; C_friends: contacts with friends and neighbors. Money given: whether participants gave money to their children or not in the past year; Money received: whether participants received money from their children or not in the past year. Sick care: whether family members' care is available or not when participants are in sick.
SHR, subdistribution hazard ratio; 95% CI, 95% confidence interval.