Journal article
A comparison of the polytomous Rasch analysis output of RUMM2030 and R (ltm/eRm/TAM/lordif)
Abstract
BackgroundPatient-reported outcome measures developed using Classical Test Theory are commonly comprised of ordinal level items on a Likert response scale are problematic as they do not permit the results to be compared between patients. Rasch analysis provides a solution to overcome this by evaluating the measurement characteristics of the rating scales using probability estimates. This is typically achieved using commercial software dedicated …
Authors
Robinson M; Johnson AM; Walton DM; MacDermid JC
Journal
BMC Medical Research Methodology, Vol. 19, No. 1,
Publisher
Springer Nature
Publication Date
12 2019
DOI
10.1186/s12874-019-0680-5
ISSN
1471-2288