Table 3.
The Percentage Change in Parameter Estimates of the Discrete Survival Regression on Time to Incident DL Difficulty from Sequential Imputation Model to Simultaneous Imputation Model
| Covariate | Sequential Coefficient |
Simultaneous Coefficient |
% Change1 |
Correlation with ADL for Survivors2 |
Correlation with ADL at Last Visit for Decedents3 |
|---|---|---|---|---|---|
| CHF | 0.159 | 0.327 | 105.66 | .09 (.08, .10) | .10 (.01, .21) |
| Social Support | −0.234 | −0.311 | 32.91 | −.03 (−.03, -.04) | −.12 (−.21, .04) |
| DSST | −0.434 | −0.369 | −14.98 | −.10 (−.11, -.09) | −.15 (−.25, .01) |
| 3MS | −0.411 | −0.488 | 18.73 | −.11 (−.12, -.07) | −.23 (−.29, -.07) |
| Diabetes | 0.458 | 0.526 | 14.85 | .07 (.03, .09) | .08 (−.07, .17) |
| CAD | 0.209 | 0.218 | 4.31 | .06 (.05, .06) | .08 (−.10, .13) |
| Arthritis | 0.677 | 0.494 | −27.03 | .15 (.14, .17) | .17 (.11, .23) |
| Stroke | 0.576 | 0.637 | 10.59 | .11 (.08, .14) | .12 (.04, .17) |
| < High School | −0.045 | 0.001 | 102.22 | .05 (.03, .08) | .10 (−.11, .19) |
| Non-white | 0.179 | 0.191 | 6.70 | .08 (.05, .10) | .04 (−.04, .08) |
| Female | 0.421 | 0.346 | −17.81 | .06 (.05, .09) | −.03 (−.12, .22) |
| Age | 0.276 | 0.275 | −0.36 | .10 (.08, .11) | .18 (.05, .21) |
1
Percentage change is obtained from (the simultaneous estimate – the sequential estimate) / (the sequential estimate).
2
The entry of correlation with the incident ADL difficulties for survivors is the median (min, max) of correlation coefficients for all 7 visits using non-imputed data.
3
The entry of correlation with the incident ADL difficulties for decedents is the median (min, max) of correlation coefficients for the last visit prior to death during 6 years using non-imputed data.