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Reliability and Validity of the Visual, Musculoskeletal, and Balance Complaints Questionnaire
Örebro University, Örebro, Sweden.
Örebro University, Örebro, Sweden; The Low Vision Center, Region Örebro County, Örebro, Sweden.
University of Gävle, Centre for Musculoskeletal Research. University of Gävle, Faculty of Health and Occupational Studies, Department of Occupational and Public Health Sciences, Occupational health science.
2016 (English)In: Optometry and Vision Science, ISSN 1040-5488, E-ISSN 1538-9235, Vol. 93, no 9, 1147-1157 p.Article in journal (Refereed) Published
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Text
Abstract [en]

PURPOSE: To evaluate the reliability and validity of the 15-item Visual, Musculoskeletal, and Balance Complaints Questionnaire (VMB) for people with visual impairments, using confirmatory factor analysis (CFA) and with Rasch analysis for use as an outcome measure. METHODS: Two studies evaluated the VMB. In Study 1, VMB data were collected from 1249 out of 3063 individuals between 18 and 104 years old who were registered at a low vision center. CFA evaluated VMB factor structure and Rasch analysis evaluated VMB scale properties. In Study 2, a subsample of 52 individuals between 27 and 67 years old with visual impairments underwent further measurements. Visual clinical assessments, neck/scapular pain, and balance assessments were collected to evaluate the convergent validity of the VMB (i.e. the domain relationship with other, theoretically predicted measures). RESULTS: CFA supported the a priori three-factor structure of the VMB. The factor loadings of the items on their respective domains were all statistically significant. Rasch analysis indicated disordered categories and the original 10-point scale was subsequently replaced with a 5-point scale. Each VMB domain fitted the Rasch model, showing good metric properties, including unidimensionality (explained variances ≥66% and eigenvalues <1.9), person separation (1.86 to 2.29), reliability (0.87 to 0.94), item fit (infit MnSq’s >0.72 and outfit MnSq’s <1.47), targeting (0.30 to 0.50 logits), and insignificant differential item functioning (all DIFs but one <0.50 logits) from gender, age, and visual status. The three VMB domains correlated significantly with relevant visual, musculoskeletal, and balance assessments, demonstrating adequate convergent validity of the VMB. CONCLUSIONS: The VMB is a simple, inexpensive, and quick yet reliable and valid way to screen and evaluate concurrent visual, musculoskeletal, and balance complaints, with contribution to epidemiological and intervention research and potential clinical implications for the field of health services and low vision rehabilitation.This is an open-access article distributed under the terms of the Creative Commons Attribution-Non Commercial-No Derivatives License 4.0 (CCBY-NC-ND), where it is permissible to download and share the work provided it is properly cited. The work cannot be changed in any way or used commercially.

Place, publisher, year, edition, pages
2016. Vol. 93, no 9, 1147-1157 p.
Keyword [en]
visual complaints, musculoskeletal complaints, balance complaints, reliability, validity, confirmatory factor analysis, Rasch analysis, ergonomy
National Category
Environmental Health and Occupational Health
Identifiers
URN: urn:nbn:se:hig:diva-22066DOI: 10.1097/OPX.0000000000000902ISI: 000383908700021PubMedID: 27309524Scopus ID: 2-s2.0-84975166324OAI: oai:DiVA.org:hig-22066DiVA: diva2:945858
Funder
Forte, Swedish Research Council for Health, Working Life and Welfare, 2009-1761
Note

Funding:

REHSAM Research Program at the Swedish Social Insurance Agency 99368-2009/RS11

Available from: 2016-07-04 Created: 2016-07-04 Last updated: 2016-11-10Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
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  • ieee
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