TABLE 1.

Participant descriptives at T‐Cog administration (T3) by diagnostic group—all modalities.

	UC (71%; n = 156)		MCI (12%; n = 26)		AD (17%; n = 38)		Total (N = 220)
	Mean (SD)	Range	Mean (SD)	Range	Mean (SD)	Range	Mean (SD)	Range	p‐value
Age	73.34 (5.6)	62–93	76.23 (8.1)	58–88	76.18 (8.2)	57–90	74.17 (6.5)	57–93	0.012 b
Education	16.54 (2.6)	9–22	16.77 (3.3)	8–20	16.58 (2.9)	9–20	16.57 (2.7)	8–22	0.924
Sex (%F)	65%		50%		37%		58%		0.005
Race (White/Black/ Asian/Multiracial)	73%/24%/ < 1%/3%		85%/15%/0%/0%		92%/8%/0%/0%		78%/20%/ < 1%/2%		0.254
Ethnicity (%Hispanic /Latinx)	2.6%		0%		0%		1.82%		0.434
MoCA‐B	19.97 (1.8)	13–22	16.48 (2.7)	12–20	9.14 (4.1)	2–16	17.72 (4.7)	2–22	<0.001 a , b . c
CDR Global	0.077 (.18)	0–0.5	0.519 (.10)	0.5–1.0	1.22 (.68)	0.5–3.0	.327 (.54)	0–3	<0.001 a , b . c
GDS	1.17 (1.6)	0–10	2.25 (2.2)	0–7	2.41 (2.4)	0–7	1.51 (1.9)	0–10	0.001 a , b
FRS	1.20 (1.7)	0–9	7.88 (4.7)	0–21	19.71 (10.1)	2–40	5.90 (8.9)	0–40	<0.001 a , b . c
FAS	0.17 (.53)	0–3	6.20 (5.4)	0–23	17.03 (7.8)	2–29	3.89 (7.4)	0–29	<0.001 a , b . c
NPI‐Q	0.28 (.88)	0–6	2.54 (3.0)	0–10	4.37 (2.9)	0–11	1.31 (2.4)	0–11	<0.001 a , b . c
T‐Cog time to completion	51.37 (11.1)	32–90	56.94 (11.5)	40–80	64.41 (20.6)	30–120	54.35 (14.2)	30–120	<0.001 b
% Completing all 12 measures	92%		81%		26%		79%		<0.001

Note: p‐value according to between groups ANOVA or Pearson chi‐square test, with Bonferroni‐adjusted post hoc tests.

Bold values are statistically significant.

Abbreviations: AD, dementia due to Alzheimer's disease; ANOVA, analysis of variance; CDR, Clinical Dementia Rating; FAS, Functional Assessment Scale; FRS, Functional Rating Scale; GDS, Geriatric Depression Scale; UC, unimpaired cognition; MCI, mild cognitive impairment; MoCA‐B, Montreal Cognitive Assessment‐Blind; NPI‐Q, Neuropsychiatric Inventory.

^a UC versus MCI.

^b UC versus AD.

^c MCI versus AD.