Validation of the RUDAS in Patients With a Middle-Level Education in Lima, Peru

Nilton Custodio, Rosa Montesinos, David Lira, Eder Herrera-Perez, Kristy Chavez, Gustavo Hernandez-Córdova, José Cuenca, Carlos Gamboa, Tatiana Metcalf

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

OBJECTIVES: To assess the psychometric properties of the Peruvian version of the Rowland Universal Dementia Assessment Scale (RUDAS-PE) to discriminate controls from patients with mild cognitive impairment (MCI) and early dementia (ED) in a population with a mid-level education.

METHODS: A total of 133 patients from a memory clinic were administered the RUDAS-PE, INECO Frontal Screening, Addenbrooke's Cognitive Examination, and Mini-Mental State Examination. Results were compared against a neuropsychological evaluation (gold standard). Validity measures, internal consistency, and concurrent validity were calculated.

RESULTS: Cronbach's α was 0.68; Pearson's ratio was 0.79 ( P < .01). The area under the receiver-operating characteristics curve of the RUDAS to discriminate between ED and MCI was 89.0% (optimal cutoff at <21), whereas between MCI and controls, it was 99.0% (optimal cutoff at <24).

CONCLUSIONS: The RUDAS-PE has acceptable psychometric properties performing well in its ability to discriminate controls from patients with MCI and ED.

Original languageEnglish
Pages (from-to)513-522
Number of pages10
JournalAmerican Journal of Alzheimer's Disease and other Dementias
Volume34
Issue number7-8
DOIs
StatePublished - 20 Aug 2019

Keywords

  • Alzheimer’s disease
  • brief cognitive tests
  • cognitive impairment
  • dementia
  • neurocognitive disorders
  • neuropsychological tests

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