Table 3.
Weibull Accelerated Failure-Time Model Associated With Incident Cognitive Impairment by Race-Ethnicity
| Independent variables | White | Black | U.S.-born Hispanic | Foreign-born Hispanic |
|---|---|---|---|---|
| Time ratio (eβ) | Time ratio (eβ) | Time ratio (eβ) | Time ratio (eβ) | |
| Subjective memory decline | 0.95** | 0.96 | 1.19 | 1.01 |
| Women | 0.97 | 0.91 | 0.83 | 0.83 |
| Live alone | 1.11*** | 1.13* | 1.49** | 1.05 |
| Education | 1.02*** | 1.02* | 1.02 | 1.02* |
| Cognition (baseline) | 1.03*** | 1.05*** | 1.05*** | 1.04*** |
| Depressive symptoms | 0.99 | 0.98 | 1.01 | 0.98 |
| Self-rated health | 0.99 | 0.99 | 0.98 | 1.16** |
| Constant | 16.09*** | 12.73*** | 11.44*** | 12.60*** |
| N of cases | 7,470 | 1,108 | 299 | 367 |
| Likelihood ratio χ 2 | 334.61 | 105.19 | 45.11 | 47.41 |
Notes: Time ratios are exponentiated coefficients and refer to the proportion of time to onset for a 1-unit difference in the predictor.
*p < .05; **p < .01; ***p < .001.