Table 3.

Cut-off points and diagnostic performance for the Peruvian version of the Rowland Universal Dementia Assessment Scale (RUDAS-PE) to discriminate between controls and participants with mild cognitive impairment (MCI) and dementia in Chuquibambilla, Junín and Santa Clotilde, Loreto.

Diagnostic performance	Discrimination between controls and participants with MCI		Discrimination between participants with MCI and dementia
	Chuquibambilla	Santa Clotilde	Chuquibambilla	Santa Clotilde
Optimal cutoff point	22	21	18	17
Sensitivity, %	85.0	81.3	100.0	100.0
Specificity, %	68.2	50.0	91.0	75.0
Correctly classified, %	76.1	64.7	97.0	90.0
Likelihood ratio +	2.67	1.63	11.00	4.00
Likelihood ratio –	0.22	0.38	0.00	0.00
AUC (95% CI)	0.83 (0.81–0.84)	0.76 (0.74–0.78)	0.99 (0.98–1.00)	0.99 (0.98–1.00)

MCI, mild cognitive impairment; AUC, area under the curve; CI, confidence interval.