Evaluation of psychometric properties of the maastricht upper extremity questionnaire (MUEQ) in iranian computer users
نویسندگان
1 School of Public Health, Iran University of Medical Sciences, Tehran, Iran and Science and Research Branch, Islamic Azad University, Tehran, Iran
2 Chemical Injuries Research Center, Systems Biology and Poisonings Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran
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چکیده
BACKGROUND: Measurement of the essential risk factors for work‑related musculoskeletal disordersis a fundamental step in predicting the problem and identifying high‑risk individuals. In this regard,Maastricht upper extremity questionnaire (MUEQ) has not been validated in Iran. This study aimedto develop a valid and reliable Persian version of MUEQ.MATERIALS AND METHODS: In this descriptive study, the computer users employed in agovernmental informatics administration in Tehran, Iran, were included during the end of 2018 andearly 2019. Face and content validity of the MUEQ was conducted, and a six‑part questionnairewas provided. The reliability of the questionnaire was obtained using Cronbach’s α and test–retest.Concurrent validity was assessed with Nordic Musculoskeletal Questionnaire (NMQ). Exploratory andconfirmatory factor analysis, comparison test of independent mean, internal consistency coefficient,test–retest, and Pearson correlation were carried out using the AMOS and SPSS 22 software.RESULTS: Participants consisted of 282 computer users (110 males) with a mean age of35.17 ± 7.65 years. The mean duration of computer use in a working day was 6.68 ± 2.10 h witha range of 1–12 h. The most prevalent symptoms were existed in the neck (39.1%), back (31.0%),and lower back (30.3%) areas. KMO test and Bartlett’s test of sphericity showed that a significantcorrelation existed among questions. Cronbach’s alpha coefficient of the questionnaire variedfrom 0.61 to 0.83 and test–retest coefficient was higher than 0.7. Correlation coefficient wasbetween NMQ and body posture (r = 0.23, P = 0.004) and between NMQ and work environment(r = 0.28, P = 0.000). Evaluations related to the construct validity and concurrent validity demonstratedthat the questionnaire has acceptable construct validity. Six factors of the MUEQ in Root MeanSquared Error Approximation (RMSEA) index (0.062) were acceptable and satisfactory in ParsimonyComparative Fit Index (PCFI), Comparative Fit Index (CFI), Normed Fit Index (NFI), and ParsimonyGoodness of Fit Index (PGFI) (0.732, 0.8000, 0.680, and 0.680, respectively).CONCLUSIONS: The Persian version of the MUEQ represented a satisfactory validity and reliabilityand was suitable for computer users in the assessment of their risk factors of musculoskeletalcomplaints.