Trends in Healthcare Resource Use Preceding Diagnosis of Alzheimer’s Disease Dementia

Table 1

Baseline demographics and clinical characteristics, matched AD dementia and non-AD cohorts.

Baseline characteristics	Year 1 preindex (matching period)				Stand. Difference
	AD		Non-AD
Sample size	27,308		27,308
Age, mean (SD)	81.6 (6.6)		81.7 (6.9)		0.0152
Female sex, (%)	17,368	63.6%	17,356	63.6%	0.0009
White race, (%)	22,345	81.8%	22,413	82.1%	0.0065
South region, (%)	18,275	66.9%	18,133	66.4%	0.0110
LIS status (at index), (%)	5,594	20.5%	5,527	20.2%	0.0061
DE status (at index), (%)	4,550	16.7%	4,534	16.6%	0.0016
Number of physician office visits, mean (SD)	11.2 (10.2)		11.0 (9.9)		0.0181
Number of inpatient hospitalizations, mean (SD)	0.2 (0.5)		0.2 (0.5)		0.0102
Number of emergency department encounters, mean (SD)	0.5 (1.2)		0.5 (1.5)		0.0148

Abbreviations: AD: Alzheimer’s disease; LIS: low income subsidy; DE: dual eligible.