Table 3.

Cut-off points and diagnostic performance for the Peruvian version of the Rowland Universal Dementia Assessment Scale (RUDAS-PE), INECO Frontal Screening (IFS) and Mini Mental State Examination (MMSE) to discriminate between controls and patients with mild cognitive impairment (MCI) and dementia.

Diagnostic performance	Discrimination between controls and patients with MCI			Discrimination between patients with MCI and dementia
	RUDAS-PE	IFS	MMSE	RUDAS-PE	IFS	MMSE
Optimal cutoff point	23	22	19	19	18	14
Sensitivity, %	89.06	100	87.50	95.00	95.00	100
Specificity, %	93.33	93.3	65.00	96.83	96.83	98.41
Youden Index	0.82	0.93	0.53	0.92	0.92	0.98
Correctly classified, %	91.13	96.77	76.61	95.93	95.93	99.19
Likelihood ratio +	13.35	15.00	4.92	29.93	29.93	63.00
Likelihood ratio −	0.18	0.00	0.40	0.05	0.05	0.00
AUC (95% CI)	0.98 (0.96–1.00)	0.99 (0.98–1.00)	0.85 (0.79–0.91)	0.98 (0.96–1.00)	1.00 (0.99–1.00)	1.00 (0.99–1.00)

Centros de Salud de Ventanilla, Callao, Lima. 2018-2019.

MCI, mild cognitive impairment; RUDAS-PE, Rowland Universal Dementia Assessment Scale, Peruvian version; IFS, INECO Frontal Screening; MMSE, Mini Mental State Examination; AUC, area under the curve; CI, confidence interval.