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The minimal perceived change: a formal model of the responder definition according to the patient's meaning of change for patient-reported outcome data analysis and interpretation
- Source :
- BMC Medical Research Methodology, BMC Medical Research Methodology, BioMed Central, 2021, 21 (1), pp.128. ⟨10.1186/s12874-021-01307-9⟩, BMC Medical Research Methodology, 2021, 21 (1), pp.128. ⟨10.1186/s12874-021-01307-9⟩, BMC Medical Research Methodology, Vol 21, Iss 1, Pp 1-14 (2021)
- Publication Year :
- 2020
-
Abstract
- International audience; Background: Patient-Reported Outcomes (PROs) are standardized questionnaires used to measure subjective outcomes such as quality of life in healthcare. They are considered paramount to assess the results of therapeutic interventions. However, because their calibration is relative to internal standards in people's mind, changes in PRO scores are difficult to interpret. Knowing the smallest value in the score that the patient perceives as change can help. An estimator linking the answers to a Patient Global Rating of Change (PGRC: a question measuring the overall feeling of change) with change in PRO scores is frequently used to obtain this value. In the last 30 years, a plethora of methods have been used to obtain these estimates, but there is no consensus on the appropriate method and no formal definition of this value. Methods: We propose a model to explain changes in PRO scores and PGRC answers. Results: A PGRC measures a construct called the Perceived Change (PC), whose determinants are elicited. Answering a PGRC requires discretizing a continuous PC into a category using threshold values that are random variables. Therefore, the populational value of the Minimal Perceived Change (MPC) is the location parameter value of the threshold on the PC continuum defining the switch from the absence of change to change. Conclusions: We show how this model can help to hypothesize what are the appropriate methods to estimate the MPC and its potential to be a rigorous theoretical basis for future work on the interpretation of change in PRO scores.
- Subjects :
- Data Analysis
Medicine (General)
Patient-Reported Outcomes
Psychometrics
[SDV]Life Sciences [q-bio]
Emotions
Minimal Clinically Important Difference
Clinical research
Minimal Important Difference
[SDV] Life Sciences [q-bio]
R5-920
Health-Related Quality of Life
Surveys and Questionnaires
Quality of Life
Responder Definition
Humans
Theory
sense organs
Patient Reported Outcome Measures
skin and connective tissue diseases
Estimation
Research Article
Model
Subjects
Details
- ISSN :
- 14712288
- Volume :
- 21
- Issue :
- 1
- Database :
- OpenAIRE
- Journal :
- BMC medical research methodology
- Accession number :
- edsair.pmid.dedup....29493c9464951f505766fd02806cc892