Table 3.

Relation of baseline level of cognitive function to risk of death^*

	Mild Cognitive Impairment		Alzheimer's Disease
Cognitive Measure	Separate Models HR (95% CI)	Single Model HR (95% CI)	Separate Models HR (95% CI)	Single Model HR (95% CI)
Episodic memory	1.48 (1.08, 2.04)	1.29 (0.92, 1.80)	1.60 (1.19,2.14)	1.27 (0.87,1.86)
Semantic memory	1.75 (1.30, 2.34)	1.31 (0.94, 1.83)	1.47 (1.16,1.86)	0.95 (0.69, 1.31)
Working memory	1.29 (1.03, 1.62)	1.01 (0.79, 1.29)	1.73 (1.35,2.23)	1.16(0.84,1.62)
Perceptual speed	1.66 (1.32, 2.09)	1.51 (1.14, 2.00)	1.87 (1.43, 2.43)	1.56 (1.10, 2.21)
Visuospatial ability	1.12 (0.90, 1.39)	1.03 (0.80, 1.32)	1.49 (1.21, 1.84)	1.12 (0.85, 1.49)

^*From proportional hazards models that controlled for age, sex, race, and education. HR, hazard ratio; CI, confidence interval.