Prevalence and risk factors of work-related musculoskeletal disorders among male bus drivers in a mega-city
[Background]Bus drivers are a high-risk group for work-related musculoskeletal disorders(WMSDs).There are a large number of bus drivers in mega-cities.High volumes of passenger traffic and complexity of road conditions may elevate their risk of WMSDs,but there are few studies related to this group.[Objective]To investigate the prevalence of WMSDs among bus drivers in a mega-city and to an-alyze potential influencing factors.[Methods]Based on cross-sectional study design and self-administered questionnaire,the pre-valence of WMSDs in past 12 months were estimated by stratified cluster sampling among bus drivers in a mega-city.Pearson χ2 and logistic regression models were used to analyze the influencing factors for the body regions with a high prevalence.[Results]The overall prevalence of WMSDs in past 12 months among bus drivers in a mega-city was 49.5%(551/1113).The prevalence of WMSDs by body regions ranged from 4.0%to 38.5%,and led by neck pain(38.5%),lower back pain(25.5%),and shoulder pain(20.8%).The results of logistic regression showed that the risk factors for neck pain were age(＞50 years),smoking,tiredness after work(moder-ate,severe),long sitting(frequently),awkward postures(sometimes,often,frequently),overtime(occasionally,often),workplace tem-perature(uncomfortable),and noise(severe)(OR=2.014、1.577、2.793、3.025、2.708、2.032、3.406、2.746、1.442、2.998、1.456、3.506;P＜0.05);the lower back pain risk factors were current work experience(6-10 years,11-15 years,and 16-20 years),smoking,tiredness after work(moderate,severe),and awkward postures(sometimes,often,frequently)(OR=1.777、2.130、2.400、1.503、2.951、3.364、1.836、4.569、2.786,P＜0.05);and the shoulder pain risk factors were age(46-50 years,and＞50 years),smoking,tiredness after work(moder-ate,severe),vehicle type(hybrid power,diesel oil),awkward postures(often,frequently),overtime(often),and workplace temperature(uncomfortable)(OR=1.737、2.357、1.553、2.259、2.489、1.659、3.295、2.777、3.320、2.266、1.426,P＜0.05).Identified protective fac-tors for neck and lower back pain were off-duty physical activity(1-2 times per week,and≥3 times per week)(OR=0.553、0.470、0.586、0.485,P＜0.05).[Conclusion]Nearly half of the bus drivers in the mega-city report symptoms of WMSDs,mainly in the neck,lower back,and shoulders.The prevalence is related to individual and occupational factors,and prevention and intervention measures should be actively taken.
国家科技期刊平台
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