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26-02-2019

Multidimensionality of the PROMIS self-efficacy measure for managing chronic conditions

Auteurs: Mi Jung Lee, Sergio Romero, Craig A. Velozo, Ann L. Gruber-Baldini, Lisa M. Shulman

Gepubliceerd in: Quality of Life Research | Uitgave 6/2019

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Abstract

Purpose

This study investigated the PROMIS Self-Efficacy Measure for Managing Chronic Conditions (PROMIS-SE) domain distributions and examined the factor structure of the PROMIS-SE.

Methods

A total of 1087 individuals with chronic conditions participated in this study. PROMIS-SE’s item banks and two short forms (eight-item and four-item) measuring five behavioral domains (daily activities(DA), Emotions(EM), medications and treatments(MT), social interactions(SS), and Symptoms(SX)) were examined. PROMIS-SE’s T-score ranges and distributions were examined to identify domain metric distributions and confirmatory factor analysis (CFA) was conducted to test a multidimensional model fit to the PROMIS-SE.

Results

PROMIS-SE domains showed different T-score ranges and distributions for item banks and two short forms across all five domains. While PROMIS-SE EM demonstrated the highest T-scores (least negatively skewed), MT had the lowest T-scores (most negatively skewed) for all three forms. In general, respondents were more likely to achieve highest self-efficacy ratings (very confident) for domains DA, MT, and SS as compared to domains EM and SX. CFA confirmed that a multidimensional model adequately fit all three PROMIS-SE forms.

Conclusion

Our results indicate that self-efficacy T-distributions are not consistent across domains (i.e., managing medications and treatments domain was more negatively skewed difficult than other domains), which is a requirement for making inter-domain comparisons. A multidimensional model could be used to enhance the PROMIS-SE’s estimate accuracy and clinical utility.
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Metagegevens
Titel
Multidimensionality of the PROMIS self-efficacy measure for managing chronic conditions
Auteurs
Mi Jung Lee
Sergio Romero
Craig A. Velozo
Ann L. Gruber-Baldini
Lisa M. Shulman
Publicatiedatum
26-02-2019
Uitgeverij
Springer International Publishing
Gepubliceerd in
Quality of Life Research / Uitgave 6/2019
Print ISSN: 0962-9343
Elektronisch ISSN: 1573-2649
DOI
https://doi.org/10.1007/s11136-019-02116-w