Table 3A:

Discrimination (Pearson Correlation) of MoCA items with total score by cognitive status among non-Hispanic Whites (n=3,145). Bolded items area those with high (>0.40) discrimination.

MoCA Item	Normal Cognition (n=1,469)		MCI (n=733)		Dementia (n=943)
	Discrimination Index (Pearson Correlation)	Difficulty (% Correct)*	Discrimination Index (Pearson Correlation)	Difficulty (% Correct)*	Discrimination Index (Pearson Correlation)	Difficulty (% Correct)*
Trails	0.28	87.1	0.36	73.4	0.58	41.0
Cubes	0.36	71.6	0.31	53.6	0.44	31.4
Clock Contour	0.11	99.1	0.14	96.5	0.34	90.7
Clock Numbers	0.19	95.6	0.22	85.0	0.60	54.0
Clock Hands	0.35	79.7	0.46	60.6	0.53	26.7
Naming	0.27	89.5	0.28	78.6	0.49	57.3
Digits	0.27	90.8	0.36	83.8	0.50	59.8
Letters	0.17	97.3	0.26	90.2	0.56	61.2
Serial 7s	0.33	89.1	0.46	71.9	0.75	34..4
Repetition	0.36	73.9	0.49	55.5	0.53	31.0
Fluency	0.33	83.5	0.35	67.9	0.44	40.1
Abstraction	0.37	81.3	0.45	66.0	0.58	34.6
Delayed Recall	0.71	31.1	0.61	5.2	0.49	1.4
Date	0.13	97.8	0.33	84.7	0.50	48.3
Month	0.05	99.5	0.10	97.8	0.52	74.4
Year	0.02	99.5	0.18	97.8	0.62	70.6
Day	0.06	99.3	0.26	92.9	0.43	61.4
Place	0.13	98.3	0.28	90.6	0.51	56.0
City	0.02	99.2	0.11	98.2	0.48	85.2

^*For non-binary items, % of individuals scoring full points