Table 2. Psychometric properties for GPCOG-Br patient and informant sections, GPCOG-Br total score and MMSE, with comparison between the proposed and the original cut-off points.

Variable	GPCOG-Br Patient Section Proposed Original		GPCOG-Br Informant Section Proposed Original		GPCOG-Br Total Score Proposed Original		MMSE Total Score Proposed Original
Cut-off point	3/4	7/8	3/4	4/5	6/7	10/11	19/20	24/25
Maximum score	9		6		15		30
N	93	93	93	93	93	93	93	93
Sensitivity (%)	86	95	86	95	86	95	79	97
Specificity (%)	75	16	65	43	80	33	81	45
PPV	0.76	0.50	0.69	0.60	0.79	0.56	0.79	0.61
NPV	0.86	0.80	0.84	0.91	0.86	0.89	0.81	0.95
AUC	0.873		0.841		0.896		0.905
AUC 95%CI	0.795–0.951		0.759–0.922		0.827–0.964		0.846–0.965
AUC SE	0.040		0.042		0.035		0.030
Misclassification (%)	19	46	25	32	17	38	19	30

N: sample; PPV: positive predictive value; NPV: negative predictive value; AUC: area under the curve; SE: standard error; GPCOG-Br: General Practitioner Assessment of Cognition – Brazilian version; MMSE: Mini-Mental Status Examination