Table 4.

NIH Toolbox Total Cognition Composite scores by age, education, gender, and ethnicity: mean, (SD), and range

		Gender		Race/ethnicity
Age group	Education	Male	Female	White	Black	Hispanic/other
20–60 Yrs	<High school	n = 22	n = 26	n = 21	n = 15	n = 12
		9.5 (2.2)	9.9 (3.4)	11.7 (2.6)	7.7 (2.0)	8.9 (2.3)
		4.9–13.9	3.9–15.7	6.6–15.7	4.1–9.9	3.9–11.6
	High school gradate	n = 29	n = 31	n = 26	n = 19	n = 15
		10.3 (2.7)	9.9 (2.3)	10.9 (2.4)	9.5 (2.1)	9.5 (2.8)
		5.9–16.3	4.5–13.7	7.4–14.8	5.9–13.1	4.5–16.3
	≥College	n = 24	n = 27	n = 24	n = 15	n = 12
		11.3 (1.9)	12.0 (2.5)	11.9 (2.2)	11.1 (1.6)	11.8 (2.7)
		8.1–15.9	8.2–18.5	8.2–18.5	8.1–13.6	8.3–15.9
65–85 Yrs	<High school	n = 9	n = 11	n = 9	n = 10	n = 1
		5.5 (1.9)	6.5 (3.0)	7.6 (2.1)	5.0 (2.3)	2.5
		2.5–9.3	1.5–10.7	5.2–10.7	1.5–9.3
	High school gradate	n = 12	n = 27	n = 26	n = 11	n = 2
		8.5 (2.5)	9.1 (2.8)	9.4 (2.5)	7.2 (2.3)	11.6 (3.9)
		4.3–11.9	5.1–16.6	5.8–16.6	4.3–11.0	8.8–14.4
	≥College	n = 23	n = 26	n = 41	n = 5	n = 3
		10.2 (2.9)	11.5 (2.9)	11.4 (2.7)	8.0 (3.4)	8.0 (1.8)
		5.0–16.1	6.6–17.5	5.0–17.5	5.3–13.9	6.6–10.0
TOTAL		n = 119	n = 148	n = 147	n = 75	n = 45
		9.8 (2.8)	10.2 (3.1)	10.9 (2.7)	8.4 (2.8)	9.8 (3.0)
		2.5–16.3	1.5–18.5	5.0–18.5	1.5–13.9	2.5–16.3