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Objective: To explore the relevant factors of work-related musculoskeletal disorders (WMSDs) among dentists through Meta analysis, providing a basis for the prevention and control of WMSDs among dentists. Methods: In April 2022, cross-sectional research literatures on the prevalence correlation of WMSDs among Chinese dentists were searched in databases such as China National Knowledge Infrastructure, Wanfang, VIP, PubMed, Web of Science, and Em Base database. The search was conducted from the establishment of the database until April 2022, literatures were selected using keywords such as musculoskeletal disorders and dentists. To extract gender, age, length of service, disease classification and other related influencing factors as indicator, and prevalence was selected as the outcome indicator. After evaluating the quality of the literatures, RevMan 5.3 software was used to calculate the combined RD (95%CI) values of the included literatures. Results: A total of 15 articles were included, with a total sample size of 3646 people. Meta analysis results showed that the prevalence of WMSDs among dentists in China was 80%, and the top three parts of the incidence rates were 65% of the waist, 58% of the neck, and 50% of the back. Gender, age, length of service, region and disease classification all increased the risk of WMSDs, and the combined effect size were 75%, 78%, 71%, 77% and 82% respectively (P<0.05) . Conclusion: The occurrence of WMSDs among dentists in China is related to multiple factors such as gender, age, length of service and disease classification. The above risk factors should be taken into account in the workplace and preventive measures should be actively implemented to prolong the working life of dentists.
Subject(s)
Humans , Prevalence , Cross-Sectional Studies , Occupational Diseases/epidemiology , Surveys and Questionnaires , Musculoskeletal Diseases/epidemiology , Risk Factors , China/epidemiology , DentistsABSTRACT
Objective@#To investigate the prevalence and risk factors of occupational musculoskeletal disorders among workers in heavy-duty automobile parts factories in Beijing Municipality, so as to provide insights into development of effective interventions for occupational musculoskeletal disorders.@*Methods@#The workers in three heavy-duty automobile truck parts factories in Beijing Municipality were recruited using the convenient sampling method during the period from May 2019 to October 2020. Subjects' demographic characteristics, type of job and prevalence of occupational musculoskeletal disorders at various sites were collected using self-designed electronic questionnaires, and the factors affecting the development of occupational musculoskeletal disorders were identified using a multivariable logistic regression model.@*Results@#A total of 264 workers were enrolled, including 260 males (98.48%) and 4 females (1.52%). The participants had a mean age of (31.71±6.13) years, and mean duration of (7.51±5.25) years at current position, and mechanical technician was the major type of work (129 workers, 48.86%). The prevalence of occupational musculoskeletal disorders was 70.08% among the participants, and high prevalence of occupational musculoskeletal disorders was found in the lower back/waist (41.28%), shoulder (40.15%), neck (39.02%) and upper back (33.33%). Multivariable logistic regression analysis identified females (OR=1.280, 95%CI: 1.021-1.602) and head-down posture at work (OR=2.644, 95%CI: 1.034-6.763) as risk factors for occupational musculoskeletal disorders at neck; females (OR=1.633, 95%CI: 1.624-2.117), sheet metal workers, mechanical technicians and painters (OR: 5.811-10.452, 95%CI: 1.205-54.027), working in an uncomfortable posture (OR：1.376-7.749, 95%CI: 1.034-27.270) and frequent working overtime (OR=2.081, 95%CI: 1.192-4.137) as risk factors for occupational musculoskeletal disorders at shoulder; and sheet metal workers, mechanical technicians and painters (OR: 8.760-11.948, 95%CI: 1.630-66.927), working in an uncomfortable posture (OR：4.067-12.185, 95%CI: 1.332-47.523) and frequent working overtime (OR=2.201, 95%CI: 1.142-4.244) as risk factors for occupational musculoskeletal disorders at waist/back.@*Conclusions@#The prevalence of occupational musculoskeletal disorders is high among workers in heavy-duty automobile parts factories, which mainly occur at shoulder, neck, waist and back. Type of work, working posture and working duration are main factors affecting the development of occupational musculoskeletal disorders.
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Objective@#To explore the prevalence of occupational musculoskeletal disorders (OMD) and its influencing factors among rural migrant workers in Tianjin, with the aim of developing strategies to improve the health condition of this specific population.@*Methods@#Questionnaire survey was conducted among 415 rural migrant workers working in Tianjin about their fundamental state and occupational musculoskeletal disorders (OMD) during January 2015 to January 2016. Statistical methods were utilized to analyze the influencing factor.@*Results@#A total of 415 rural migrant workers were investigated, in which young Young adults and low education level were in the majority of rural migrant workers. The prevalence of OMD for whole population, male and female were 28.92% (120/415), 33.06% (81/245) and 22.94% (39/170), respectively. Prevalence showed significant differences njin and workplace hygiene. Multivariate logistic regression analysis showed that the risks of OMD increased with age group, and decreased with higher education level. The risk of OMD among rural migrant workers with monthly income between 3000 to 5000 yuan was 2.26 times (95%CI: 1.37-3.75) higher than that of low-income workers (<3000 yuan per month). Workers engaged in housekeeping service had 2.28 times higher risk of OMD than those in manufacturing industry (95%CI: 1.06-4.89) .@*Conclusion@#Prevalence of OMD among rural migrant workers is higher than that of general people. Age, education, monthly income, occupation are the independent influencing factors for OMD among rural migrant workers.
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Objective@#To study the correlation of occupation musculoskeletal disease (OMD) and safety behavior in assembly line workers.@*Methods@#Selected assembly line workers of 3 manufacturing factory in Pacity as the objects of this study by judgement sampling. Questionnaires were used for messages collection including the general sociodemographic characteristic, OMD condition, occupational safety behaviors.@*Results@#This study shows that, 826 OMD workers were found that the annual prevalence was 38.03%. The scores of work posture, handling habits, health habit in OMD group was lower than non-OMD group (P<0.01) but personal protection behavior was higher than non-OMD group (P<0.01) . Test of binary logistic regression revealed that age, workage, work posture, handling habits were the factors of OMD (P<0.01) .@*Conclusion@#Safety behaviors were the potent factors of OMD that work posture and handling habits should be broadcast.
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OBJECTIVE: To explore the relationship between occupational stress and occupational musculoskeletal disorders( OMD) in coal miners. METHODS: A total of 362 coal miners were selected through cluster sampling method. The prevalence of OMD was investigated by the Nordic Standardized Questionnaires for Musculoskeletal Disorders( Chinese version). The Job Content Questionnaire and Effort Reward Imbalance Questionnaire were used to assess the occupational stress and depression of coal miners was determined by the Epidemiological Studies Depression Scale. RESULTS: The prevalence of OMD in coal miners was 63. 5%. There were 45. 9%( 166/362) of coal miners suffered from occupational stress with job demand-control model imbalance and 62. 4%( 226/362) of coal miners have occupational stress with effortreward model imbalance. The multiple logistic non-conditional regression analysis showed that the longer service length with exposure to occupational hazard factors,the more working days per week,the lower job contents and technical decisionmaking power,the higher the occupational stress with effort-reward imbalance,and the higher the depression and the higher the risk of OMD( P < 0. 05). CONCLUSION: Occupational stress and depression are both risk factors of OMD in coal miners.
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OBJECTIVE: To investigate the prevalence of occupational musculoskeletal disorders(OMD) in workers of manufacturing industry,and to analyze its influencing factors.METHODS: A total of 1 168 first-line workers from 3manufacturing enterprises were selected as study subjects using convenient sampling.The self-designed questionnaire was used to investigate the basic information and the ergonomics of work process.The Nordic Musculoskeletal Questionnaire was used to investigate the prevalence of OMD.The workers were divided into non-OMD group and OMD group.RESULTS: The prevalence of OMD in these 1 168 workers was 34.9%.Comparing with the non-OMD group,the score of using auxiliary tools to carry the weights in the OMD group was higher(P<0.01),and the scores of straight waist and bent knees when transporting heavy object was lower(P<0.01).Logistic regression analysis showed that male workers had a higher risk of OMD than female workers(P<0.05).The longer the length of service,the greater the risk of OMD(P<0.01).Shift workers had the higher risk of OMD than non-shift workers(P<0.01).The higher scores of using auxiliary tools to carry the weights and straight waist and bent knees when transporting heavy object(it mean that less use of the above labor behavior and posture),the greater the risk of OMD(P<0.05).CONCLUSION: Sex,length of service,shift,labor behavior and posture are the influencing factors of OMD.