Table 2.

Weibull Accelerated Failure-Time Models Associated With Incident Cognitive Impairment (N = 9,244)

Independent variables	Model 1			Model 2			Model 3
	β	SE	Time ratio (eβ)	β	SE	Time ratio (eβ)	β	SE	Time ratio (eβ)
Subjective memory decline	−0.06**	0.02	0.95**	−0.06***	0.02	0.94***	−0.04*	0.02	0.96*
Black				−0.34***	0.02	0.71***	−0.18***	0.02	0.84***
U.S.-born Hispanic				−0.33***	0.04	0.72***	−0.14***	0.04	0.87***
Foreign-born Hispanic				−0.32***	0.03	0.73***	−0.08	0.04	0.93
Women				-0.03	0.02	0.97	−0.06**	0.02	0.94**
Live alone							0.11***	0.02	1.12***
Education							0.02***	0.00	1.02***
Cognition (baseline)							0.04***	0.00	1.04***
Depressive symptoms							−0.01*	0.00	0.99*
Self-rated health							−0.001	0.01	1.00
Constant	3.65***	0.02		3.74***	0.02		2.78***	0.05
Likelihood ratio χ 2	8.43			317.95			794.78

Notes: A negative β reflects earlier onset of incident cognitive impairment (positive, later onset). SE = standard error. 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.