Table 3. Incidence rates (IR) per 1000 person-years and hazard ratios (HR) with 95% confidence intervals (95% CI) of all-cause dementia (n= 52) over 22-year follow-up by Eichner categories.

Eichner Index	No. events/ person-years	IR (95% CI)	HR (95% CI)a	Adjusted HR (95% CI)b	Multi-adjusted HR (95% CI)c
A	13/2496	5.20 (3.02 to 8.97)	1.00 (reference)	1.00 (reference)	1.00 (reference)
B	17/2420	6.91 (4.29 to 11.11)	0.90 (0.43 to 1.86)	0.83 (0.39 to 1.76)	1.03 (0.43 to 2.44)
C	22/2957	7.44 (4.90 to 11.30)	0.73 (0.35 to 1.50)	0.63 (0.30 to 1.29)	0.79 (0.31 to 2.03)

^aCrude model.

^bModel adjusted for baseline sex and education.

^cAdditionally adjusted for birth cohort, hypertension, heart disease, periodontal disease, childhood SES, prosthesis use, diabetes, cerebrovascular disease, and alcohol consumption.