Table 2.
Mortality hazard ratios and 95 % CIs for frailty, socioeconomic vulnerability, and interactions, CLHLS 2008/2009-2011/2012
| Model I | Model II | Model III | Model IV | Model V | Model VI | Model VII | Model VIII | |
|---|---|---|---|---|---|---|---|---|
| Main terms | ||||||||
| Frailty index (×100) | 1.027*** (1.025–1.029) | 1.038*** (1.032–1.044) | 1.041*** (1.036–1.046) | 1.032*** (1.025–1.039) | 1.108*** (1.092–1.125) | 1.105*** (1.088–1.122) | 1.101*** (1.084–1.119) | 1.099*** (1.081–1.117) |
| SEVI (×100) | 1.006*** (1.004–1.008) | 1.011*** (1.001–1.014) | 1.012*** (1.009–1.015) | 1.044*** (1.028–1.060) | 1.008*** (1.005–1.011) | 1.007*** (1.004–1.010) | 1.033*** (1.017–1.049) | 1.029*** (1.013–1.045) |
| Interaction terms | ||||||||
| SEVI*frailty index (×100) | 0.983*** (0.967–0.992) | 0.977*** (0.970–0.985) | 0.993 (0.984–1.003) | 0.991* (0.983–0.999) | 0.994 (0.985–1.002) | 0.996 (0.989–1.005) | 0.998 (0.989–1.007) | |
| SEVI*age | 0.963*** (0.946–0.980) | 0.973** (0.956–0.990) | 0.975** (0.958–0.993) | |||||
| Frailty index*age | 0.928*** (0.913–0.943) | 0.928*** (0.913–0.944) | 0.930*** (0.915–0.946) | 0.931*** (0.915–0.946) | ||||
| Controls | ||||||||
| Age | 1.055*** (1.052–1.058) | 1.055*** (1.051–1.058) | 1.054*** (1.050–1.058) | 1.081*** (1.068–1.094) | 1.074*** (1.069–1.080) | 1.070*** (1.065–1.076) | 1.094*** (1.080–1.107) | 1.088*** (1.074–1.101) |
| Men (women) | 1.510*** (1.421–1.605) | 1.511*** (1.423–1.601) | 1.563*** (1.0464–1.667) | 1.501*** (1.413–1.594) | 1.485*** (1.399–1.576) | 1.535*** (1.439–1.638) | 1.478*** (1.392–1.569) | 1.526*** (1.430–1.628) |
| Han ethnicity (non-Han) | 0.866** (0.784–0.956) | 0.868** (0.785–0.957) | 0.889* (0.805–0.982) | 0.861** (0.780–0.951) | 0.873** (0.791–0.964) | 0.895* (0.810–0.988) | 0.869** (0.787–0.960) | 0.891* (0.806–0.984) |
| Coresidence with family (no) | 1.096* (1.013–1.184) | 1.090* (1.009–1.178) | 1.090* (1.009–1.178) | |||||
| Currently married (no) | 0.769*** (0.705–0.838) | 0.779*** (0.715–0.849) | 0.786*** (0.721–0.856) | |||||
| Currently smoking (no) | 1.056 (0.973–1.146) | 1.072 (0.987–1.162) | 1.074 (0.990–1.18) | |||||
| Doing regular exercise (no) | 0.878*** (0.817–0.944) | 0.863*** (0.802–0.928) | 0.864*** (0.804–0.929) | |||||
| Wald Chi square | 4013.0*** | 4006.1*** | 3844.8*** | 3891.2*** | 3630.1*** | 3608.4*** | 3558.2*** | 3547.3*** |
Score of frailty index ranges from 0 (no deficits, the healthiest) to 1 (all deficits, the worst), while the score of the socioeconomic vulnerability index ranges from 0 (the least vulnerable) to 1 (the most vulnerable)
The reference category for each control is in parentheses
The total valid sample size in the analyses is 13,731
A model that includes the interaction between SEVI and age, main terms, and controls is similar to Model IV. A model that includes the interaction between frailty index and age, main terms and controls is similar to Model V. Therefore, these two models are not presented to save the space
*p <0.05, ** p <0.01, *** p <0.001