Table 3. Alternative cut-off points with respective sensitivity and specificity rates and positive and negative likelihood ratio, for GPCOG-Br sections and total score.

Variable	Cut-off point	Sensitivity	Specificity	PLR	NLR
GPCOG-Br patient section	2/3	0.75	0.90	7.35	0.27
	3/4	0.86	0.75	3.52	0.18
	4/5	0.89	0.60	1.14	0.27
GPCOG-Br informant section	2/3	0.66	0.87	2.49	0.20
	3/4	0.86	0.65	1.67	0.10
	4/5	0.95	0.44	4.23	0.17
GPCOG-Br total score	5/6	0.75	0.90	1.41	0.14
	6/7	0.86	0.79	4.33	0.25
	7/8	0.91	0.75	1.77	0.05

PLR: positive likelihood ratio; NLR: negative likelihood ratio; GPCOG-Br: General Practitioner Assessment of Cognition – Brazilian version