Journal article
Item Response Theory Analysis: PROMIS (R) Anxiety Form and Generalized Anxiety Disorder Scale
Western journal of nursing research, Vol.44(8), pp.765-772
05/17/2021
DOI: 10.1177/01939459211015985
PMCID: PMC8595462
PMID: 33998340
Abstract
Little research has compared item functioning of the Patient-Reported Outcomes Measurement Information System (PROMIS(R)) anxiety short form 6a and the generalized anxiety disorder 7-item scale using item response theory models. This was a secondary analysis of self-reported assessments from 67 at-risk U.S. military veterans. The two measures performed comparably well with data fitting adequately to models, acceptable item discriminations, and item and test information curves being unimodal and symmetric. The PROMIS(R) anxiety short form 6a performed better in that item difficulty estimates had a wider range and distributed more evenly and all response categories had less floor effect, while the third category in most items of the generalized anxiety disorder 7-item scale were rarely used. While both measures may be appropriate, findings provided preliminary information supporting use of the PROMIS(R) anxiety short form 6a as potentially preferable, especially for veterans with low-to-moderate anxiety. Further testing is needed in larger, more diverse samples.
Details
- Title: Subtitle
- Item Response Theory Analysis: PROMIS (R) Anxiety Form and Generalized Anxiety Disorder Scale
- Creators
- Wen Liu - University of IowaLilian Dindo - Michael E. DeBakey VA Medical CenterKatherine Hadlandsmyth - Roy J. and Lucille A. Carver College of MedicineGeorge Jay Unick - University of Maryland, BaltimoreM. Bridget Zimmerman - University of IowaBarbara St Marie - University of IowaJennie Embree - University of IowaToni Tripp-Reimer - University of IowaBarbara Rakel - University of Iowa
- Resource Type
- Journal article
- Publication Details
- Western journal of nursing research, Vol.44(8), pp.765-772
- DOI
- 10.1177/01939459211015985
- PMID
- 33998340
- PMCID
- PMC8595462
- NLM abbreviation
- West J Nurs Res
- ISSN
- 0193-9459
- eISSN
- 1552-8456
- Publisher
- Sage
- Number of pages
- 8
- Grant note
- R34 AT008349-01 / NIH/NINR; United States Department of Health & Human Services; National Institutes of Health (NIH) - USA; NIH National Institute of Nursing Research (NINR)
- Language
- English
- Date published
- 05/17/2021
- Academic Unit
- Psychiatry; Biostatistics; Addiction Medicine; Nursing; Anesthesia; Physical Therapy and Rehabilitation Science; Injury Prevention Research Center
- Record Identifier
- 9984280867602771
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