Abstract
BackgroundMusculoskeletal disorders (MSDs) are a major health problem in the world. Self-reported questionnaires are a known method for estimating the prevalence of MSDs among the population. One of the studies concerning MSDs and their relation to work-related physical and psychosocial factors, as well as non-work-related factors, is the MUSIC-Norrtalje study in Sweden. In this study, the research group developed a questionnaire, which has been validated during its development process and is now considered a well-known instrument. The aim of this study is to validate the Persian version of this questionnaire.MethodsThe first step was to establish two expert panel groups in Iran and Sweden. The Focus Group Discussion (FGD) method was used to detect questionnaire face and content validity. To detect questionnaire reliability, we used the test-retest method.ResultsExcept for two items, all other questions that respondents had problems with in the focus group (20 of 297), had unclear translations; the ambiguity was related to the stem of the questions and the predicted answers were clear for the participants. The concepts of 'household/spare time' and 'physical activity in the workplace' were not understood by the participants of FGD; this has been solved by adding further descriptions to these phrases in the translation. In the test-retest study, the reliability coefficient was relatively high in most items (only 5 items out of 297 had an ICC or kappa below 0.7).ConclusionThe findings from the present study provide evidence that the Persian version of the MUSIC questionnaire is a reliable and valid instrument.
Highlights
Musculoskeletal disorders (MSDs) are a major health problem in the world
Validity Totally 16 people participated in 3 focus group discussion meetings
The MUSIC questionnaire consisted of 10 domains and 14 sub-domains (Scales)
Summary
Musculoskeletal disorders (MSDs) are a major health problem in the world. Selfreported questionnaires are a known method for estimating the prevalence of MSDs among the population. Musculoskeletal disorders (MSDs) are a major health problem in all countries [1]. They encompass a variety of conditions, including disorders of muscles, tendons and nerves. There is no "golden standard" measurement tool for estimating the prevalence of MSDs among the population. Statistics on the prevalence of work-related musculoskeletal disorders may vary from one reference source to another, primarily due to variations in outcome measures, and the diagnostic criteria. A common method for estimating the magnitude of the problem is self-reported data in questionnaires concerning episodes of pain [2]. Organizational, psychosocial, and sociological factors at work can contribute to MSDs alone or in combination [3,4,5]
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