Table 4.

Hazard Ratios Relating Body Mass Index (BMI) to Incident Dementia and Cognitive Impairment but not Demented (Dementia/CIND) During 8 Years of Follow-up From Cox Proportional Hazards Regression Models

Measure	Hazard Ratio (95% Confidence Interval)
	Model 1a	Model 2b	Model 3c	Model 4d
BMI, kg/m2
<25.0 (reference)	1.0	1.0	1.0	1.0
25.0–29.9	0.71 (0.43–1.2)	0.55 (0.32–0.95)	0.47 (0.27–0.82)	0.46 (0.25–0.86)
>30.0	0.69 (0.42–1.1)	0.49 (0.25–0.95)	0.34 (0.17–0.70)	0.24 (0.10–0.54)
p for trend	.18	.05	.004	.001

Notes:

^aAdjusted for age, sex, and education.

^bAdjusted for age, sex, education, and waist circumference tertile.

^cAdjusted for age, sex, education, waist circumference tertile, and height.

^dAfter exclusion of dementia/CIND cases identified during first two follow-up evaluations and adjusted for age, sex, education, waist circumference tertile, and height.