Examining unidimensionality and improving reliability for the eight subscales of the SF-36 in opioid-dependent patients using Rasch analysis.
Purpose: The Medical Outcome Study Short Form 36 (SF-36) is one of the most commonly used questionnaires for monitoring the Health-Related Quality of Life (HRQOL) of opioid-dependent patients. However, the unidimensionality and reliability of the SF-36 have not been verified in opioid-dependent pati...
| Published in: | Quality of Life Research Vol. 24; no. 2; pp. 279 - 286 |
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| Main Authors: | , , , , |
| Format: | research Journal Article |
| Published: |
Springer Nature
Feb2015
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| Online Access: | View this record in EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=109776065&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 109776065 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 09629343 GPQ jtl: Quality of Life Research issn: 09629343 maglogo: N pubinfo: dt: Feb2015 vid: 24 iid: 2 pid: 237 pub: Springer Nature place: New York, New York artinfo: ui: 109776065 NLM25099198 2012894210 10.1007/s11136-014-0771-z NLM25099198 109776065 ppf: 279 ppct: 7 formats: fmt: @attributes: type: P tig: atl: Examining unidimensionality and improving reliability for the eight subscales of the SF-36 in opioid-dependent patients using Rasch analysis. aug: au: Hsiao, Yu-Yu Shih, Ching-Lin Yu, Wan-Hui Hsieh, Cheng-Hsi Hsieh, Ching-Lin affil: Department of Educational Psychology, Texas A&M University, 4225 TAMU, College Station, TX, 77843-4225, USA. sug: subj: Quality Improvement Quality of Life Questionnaires Standards Substance Use Disorders Drug Therapy Adolescence Adult Female Human Male Middle Age Prospective Studies Psychometrics Rasch Analysis Reproducibility of Results Short Form-36 Health Survey (SF-36) Taiwan Young Adult Adolescent: 13-18 years Adult: 19-44 years Middle Aged: 45-64 years Female Male ab: Purpose: The Medical Outcome Study Short Form 36 (SF-36) is one of the most commonly used questionnaires for monitoring the Health-Related Quality of Life (HRQOL) of opioid-dependent patients. However, the unidimensionality and reliability of the SF-36 have not been verified in opioid-dependent patients. The aim of this study was to examine the unidimensionality and to improve the test reliability of the SF-36 for use in opioid-dependent patients.Methods: A total of 583 opioid-dependent patients were recruited in the study. Unidimensionality was examined by conducting unidimensional Rasch analysis. Item fit statistics and principle component analysis were used to check the item-model fit in each of the eight subscales of the SF-36. Reliability was evaluated by applying both unidimensional and multidimensional Rasch analyses.Results: After three misfitting items were excluded, the remaining items of each subscale in the SF-36 represented a single construct. The test reliabilities (0.80-0.87) yielded by the multidimensional approach were much higher than those (0.68-0.82) produced by the unidimensional approach.Conclusion: The remaining 32 items of the SF-36 are appropriate for evaluating the HRQOL in opioid-dependent patients in terms of unidimensionality. Additionally, the test scores produced by the multidimensional approach were more accurate than those obtained by the unidimensional approach. pubtype: Academic Journal doctype: research Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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