Table 2.

Prevalence of early-onset dementia in the 4 groups according to sex, age group, race, urbanicity, poverty, presence/absence of depression, other psychiatric conditions, and cardiovascular disease risk factors

		ASD only		ASD + ID		ID only		GP
		(n = 12,648)		(n = 26,168)		(n = 406,570)		(n = 798,828)
		N	%	N	%	N	%	N	%
Dementia		511	4.04	1,366	5.22	28,871	7.10	7,767	0.97
Age at First Enrollment1	30–50	288	2.83	899	4.22	13,061	4.65	2,517	0.42
	51–64	223	9.01	467	9.56	15,810	12.56	5,250	2.60
Sex	Male	321	3.77	908	4.99	14,975	6.90	3,855	1.27
	Female	190	4.61	458	5.76	13,896	7.34	3,912	0.79
Race	White	362	3.91	1,014	5.38	20,722	7.37	4,149	1.15
	Black	75	4.52	207	4.57	5,422	7.03	2,070	1.27
	Asian/Pacific Islander	7	3.08	29	6.61	342	5.13	214	0.53
	Hispanic/Latino	28	4.35	52	4.99	1,196	5.27	804	0.44
	Other	39	4.58	64	4.93	1,189	6.22	530	0.97
Urbanicity	Urban	423	4.09	1,109	5.16	22,252	7.05	6,380	0.96
	Suburban	37	2.77	161	5.76	3,786	7.01	781	1.05
	Rural	51	5.38	93	5.18	2,756	7.81	585	1.06
	Missing	0	0.00	3	3.30	77	5.01	21	0.83
Medicaid Eligibility Category2	Poverty	10	1.86	1	1.39	39	2.42	268	0.11
	Disability	489	4.37	1,350	5.26	28,611	7.15	7,039	2.24
	Other	12	1.30	15	3.64	221	4.79	460	0.19
Depression	Yes	313	5.76	527	8.12	13,046	11.51	4,320	2.76
	No	198	2.74	839	4.26	15,825	5.40	3,447	0.54
Any Other Mental Disorder(s)	Yes	441	4.73	1,205	6.10	22,566	9.42	6,107	2.26
	No	70	2.11	161	2.51	6,305	3.77	1,660	0.31
Cardiovascular Disease Risk Factor(s)	Yes	339	6.24	753	7.34	16,237	9.23	5,793	2.18
	No	172	2.38	613	3.85	12,634	5.48	1,974	0.37

^1.Age at first observed Medicaid enrollment, starting in 2008.

^2.The most common Medicaid eligibility category for the enrolled period.