Item distribution, internal consistency, and structural validity of the German version of the DEMQOL and DEMQOL-proxy.

ABSTRACT:

Background

Accurate assessment of health-related quality of life as an endpoint in intervention studies is a major challenge in dementia research. The DEMQOL (29 items) and the proxy version (32 items), which is partly based on the DEMQOL, are internationally used instruments. To date, there is no information on the structural validity, item distribution, or internal consistency for the German language version of these questionnaires.

Methods

This psychometric study is based on a secondary data analysis of a sample of 201 outpatients with a mild form of Alzheimer's disease (AD) and their informal caregivers. The informal caregivers who were interviewed were involved in the care of the person with AD several times per week. The analysis for the evaluation of the structural va

SUBMITTER: Schwab CGG 

PROVIDER: S-EPMC6194625 | biostudies-literature | 2018 Oct

REPOSITORIES: biostudies-literature