Table 1.

Distribution of Characteristics of U.S. Adults Aged 70 and Older and Prevalence of Probable Dementia, 2011–2015

	Distribution of Characteristics						Prevalence of Probable Dementia
	2011	2012	2013	2014	2015	p-Valuea	2011	2012	2013	2014	2015	p-Valueb
Age						.000
70–79	61.1	60.7	62.2	62.4	64.2		5.3	5.2	5.4	4.7	4.9	.377
80–89	33.0	32.9	31.4	31.1	29.4		16.3	16.7	16.3	15.6	16.1	.605
90+	5.9	6.4	6.5	6.5	6.5		32.7	31.7	30.8	31.9	30.6	.598
Sex						.338
Men	42.0	42.0	43.1	42.9	43.3		9.2	9.6	9.6	8.8	9.6	.993
Women	58.0	42.6	56.9	57.1	56.7		11.5	11.5	11.1	10.7	10.1	.027
Race/ethnicity						.000
White, non-Hispanic	80.9	81.2	80.8	81.2	78.6		9.4	9.5	9.2	8.5	8.4	.025
Black, non-Hispanic	7.9	8.1	8.2	7.9	8.0		15.9	14.9	13.6	12.2	12.7	.006
Hispanic/other	11.2	10.7	11.0	10.8	13.4		15.2	16.3	17.2	18.0	17.0	.303
Education						.000
< 12 years	23.9	23.2	21.5	19.3	18.5		18.3	19.5	20.5	18.9	18.9	.834
High school	29.6	29.4	28.2	28.3	30.1		11.4	10.5	9.4	10.3	11.0	.778
Some college	24.7	24.1	24.9	25.2	25.3		6.3	7.3	7.4	6.6	6.2	.647
College graduate	21.8	23.3	25.5	27.2	26.1		5.7	5.7	5.9	6.0	5.6	.944
Any vascular conditions/risk factors						.000
No	19.9	19.1	18.3	16.9	19.6		8.2	7.3	7.1	5.9	5.4	.012
Yes	80.1	80.9	81.7	83.1	80.4		11.1	11.5	11.2	10.7	11.0	.367
Any vascular conditions/risk factors						.000
0	19.9	19.1	18.3	16.9	19.6		8.2	7.3	7.4	5.9	5.4	.012
1	34.9	33.5	32.3	31.7	31.9		8.6	8.2	7.9	7.9	7.8	.334
2	24.2	24.9	25.5	26.3	26.4		11.6	10.9	11.1	10.4	10.4	.312
3+	21.0	22.5	23.9	25.1	22.1		14.9	17.1	15.7	14.4	16.1	.890

Note. Excludes residents of nursing homes.

^a p-Value for chi-square test.

^b p-Value for trend from regression model adjusted for survey design with continuous measure for year.