. Author manuscript; available in PMC: 2012 Jul 11.

Published in final edited form as: JAMA. 2012 Jan 11;307(2):165–172. doi: 10.1001/jama.2011.1964

Table 3.

Hospital Admission Rates per 1,000 Person-Years, for All-Cause and Ambulatory Care Sensitive (Potentially Preventable) Causes, by Dementia Type vs. Non-Demented Group.

	Crude Rate^a			Adjusted Rate Ratio^b		Adjusted P-value
	Dementia Type		Non-demented	AD vs. Non	Other vs. Non	AD vs. Non	Other vs. Non
	AD (No.)	Other^c (No.)	(No.)	AD vs. Non	Other vs. Non	AD vs. Non	Other vs. Non
All admits	358 (375)	518 (339)	200 (4614)	1.27^d (0.93 to 1.50)	1.61 (1.33 to 1.96)	.005	<.0001
ACSC admits	99 (104)	144 (94)	37 (845)	1.65 (1.21 to 2.24)	1.92 (1.39 to 2.66)	.002	<.0001

Abbreviation: AD, Alzheimer type dementia.

Admission rate shown as mean number of admissions per year per 1000 persons. Total years of follow-up (used in computation of rates): 23092 years for the non-demented group, 1049 years for the AD group, and 654 years for the other dementia group.

Adjusted for age, gender, race, education, living alone (all assessed only at baseline), and time-varying variables, including calendar year of admit, self-rating of health, count of number of activities of daily living (ADL) performed with difficulty, and RxRisk (log transformed), cancer, diabetes, and heart disease.

Other dementia includes non-AD etiologies and AD mixed with additional etiologies.

Test of whether the rate ratio for AD vs. Non. differs from the rate ratio for other dementia vs. Non: P-value =.07 for all admits and =.50 for ACSC admits.