Reconstructing the Rasch-Built Myotonic Dystrophy Type 1 Activity and Participation Scale.

ABSTRACT:

Introduction

A previously published Rasch-built activity and participation scale specifically designed for patients with myotonic dystrophy type 1 (DM1) was criticized for having been constructed in a relatively small cohort of patients and containing items too broadly phrased for DM1 patients, thus hampering its clinical use.

Methods

We report the results of the reconstructed Rasch-built DM1 activity and participation scale for clinical use (DM1-ActivC) through Rasch analyses using an expanded questionnaire containing 146 more simply phrased activity and participation inquiries completed by 340 patients with DM1.

Results

Through stepwise investigation including data quality control, model fit, response category ordering, local dependency and item bias, we succeeded i

SUBMITTER: Hermans MC 

PROVIDER: S-EPMC4618741 | biostudies-literature | 2015

REPOSITORIES: biostudies-literature