Document Detail

Measurement invariance of the PROMIS pain interference item bank across community and clinical samples.
MedLine Citation:
PMID:  22552604     Owner:  NLM     Status:  Publisher    
PURPOSE: This study examined the measurement invariance of responses to the patient-reported outcomes measurement information system (PROMIS) pain interference (PI) item bank. The original PROMIS calibration sample (Wave I) was augmented with a sample of persons recruited from the American Chronic Pain Association (ACPA) to increase the number of participants reporting higher levels of pain. Establishing measurement invariance of an item bank is essential for the valid interpretation of group differences in the latent concept being measured. METHODS: Multi-group confirmatory factor analysis (MG-CFA) was used to evaluate successive levels of measurement invariance: configural, metric, and scalar invariance. RESULTS: Support was found for configural and metric invariance of the PROMIS-PI, but not for scalar invariance. CONCLUSIONS AND RECOMMENDATIONS: Based on our results of MG-CFA, we recommend retaining the original parameter estimates obtained by combining the community sample of Wave I and ACPA participants. Future studies should extend this study by examining measurement equivalence in an item response theory framework such as differential item functioning analysis.
Jiseon Kim; Hyewon Chung; Dagmar Amtmann; Dennis A Revicki; Karon F Cook
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-5-3
Journal Detail:
Title:  Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation     Volume:  -     ISSN:  1573-2649     ISO Abbreviation:  -     Publication Date:  2012 May 
Date Detail:
Created Date:  2012-5-3     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9210257     Medline TA:  Qual Life Res     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Department of Rehabilitation Medicine, University of Washington, Seattle, WA, 98195, USA.
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