Development of a novel convenient Alzheimer's disease assessment scale, the ABC Dementia Scale, using item response theory.

ABSTRACT:

Aim

The present study aimed to assess the interrater reliability and construct the validity of a novel, convenient informant-based Alzheimer's disease assessment scale to prepare its final version.

Methods

For the assessment, site investigators, co-medicals and, if available, medical staff other than doctors or co-medicals interviewed study informants to assess individuals using this scale. We then analyzed the interrater reliability and construct validity using factor analysis and item response characteristics.

Results

In this study, 427 eligible participants were enrolled. We first examined the interrater reliability, and found that the lower limit of the confidence interval of each item was never <0.4 (except for the item "delusion of theft"). After deleting this i

SUBMITTER: Umeda-Kameyama Y 

PROVIDER: S-EPMC7380014 | biostudies-literature | 2019 Jan

REPOSITORIES: biostudies-literature