An alternative application of Rasch analysis to assess data from ophthalmic patient-reported outcome instruments.

ABSTRACT:

Purpose

To highlight the potential shortcomings associated with the current use Rasch analysis for validation of ophthalmic questionnaires, and to present an alternative application of Rasch analysis to derive insights specific to the cohort of patients under investigation.

Methods

An alternative application of Rasch analysis was used to investigate the quality of vision (QoV) for a cohort of 481 patients. Patients received multifocal intraocular lenses and completed a QoV questionnaire one and twelve months post-operatively. The rating scale variant of the polytomous Rasch model was utilized. The parameters of the model were estimated using the joint maximum likelihood estimation. Analysis was performed on data at both post-operative assessments, and the outcomes were compa

SUBMITTER: McNeely RN 

PROVIDER: S-EPMC6013148 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature