Validation of the Neuropsychiatric Inventory Based on Item Response Theory.

ABSTRACT:

Background

The Neuropsychiatric Inventory (NPI) is a widely used scale for the assessment of the behavioral and psychological symptoms of dementia (BPSD). We previously developed a novel dementia scale, the ABC dementia scale, in the TRIAD1412 trial and we compared the BPSD domain scores with the NPI scores. We, therefore, considered that we should investigate the quality of the NPI items using statistical approaches.

Objective

We investigated the statistical characteristics of the 12 questions or items in the Japanese version of the NPI using the item response theory. This theory is the standard approach for the development of a new assessment scale and we used it to evaluate the quality of the items in the NPI.

Methods

First, we performed factor analysis with Promax

SUBMITTER: Wada-Isoe K 

PROVIDER: S-EPMC7306920 | biostudies-literature | 2020 May

REPOSITORIES: biostudies-literature