Enhanced diagnostic accuracy for neurocognitive disorders: a revised cut-off approach for the Montreal Cognitive Assessment

Table 1 Demographic characteristics

Group	NC	NF	Mild+Major NCD	Mild NCD
n	283	49	447	159
Prevalence in MC sample %	–	9.9	90.1	32.1
Age mean (SD)	73.8 (5.2)	73.1 (5.6)	78.3 (5.9)*	76.0 (6.0)*
Age range	65–91	65–88	65–91	65–91
Education mean (SD)	13.6 (2.9)	13.8 (2.7)	12.2 (3.0)*	12.4 (3.1)*
Education	7–20	8–20	7–20	7–20
Female %	54.8	40.8	55.7	53.5
MMSE score	29.2 (0.9)	29.0 (1.0)	25.1 (3.5)*	27.2 (2.2)*
MoCA score	26.5 (2.4)	26.5 (2.2)	19.1 (4.5)*	22.0 (3.6)*
MoCA score range	16–30	22–30	2–30	12–30
MoCAz-score	0.0 (1.0)	0.1 (1.0)	− 2.1 (1.0)*	− 1.5 (1.0)*
MoCAz-score range	− 3.0–2.4	− 1.7–1.9	− 4.3–1.5	− 3.7–1.5

Data are presented as mean (SD). There were no differences between NC and NF. Mild NCD is a subgroup of Mild+Major NCD. NF is compared to Mild+Major NCD and Mild NCD: *P < .001
Abbreviations: NC normal controls, NCD neurocognitive disorder, NF normal findings, MMSE Mini Mental State Examination, MoCA Montreal Cognitive Assessment; MoCA z-score demographically corrected standard score [7]

ISSN: 1758-9193