title: [The interactive effect of job task and psychosocial factors on work-related musculoskeletal disorders].
abstract: OBJECTIVE
  To investigate the interactive effect of job task and psychosocial factors on the outcomes of musculoskeletal disorders.
  
  
  METHODS
  653 workers from different type of manufacturing industries and administration office recruited in a cross-sectional epidemiological survey. The Quick Exposure Check (QEC) was applied to assess the ergonomic load of job task, Job Content Questionnaire (JCQ) for identifying psychological characteristics, and Nordic Standardized Questionnaire for investigating outcomes of WMSDs.
  
  
  RESULTS
  The prevalence of WMSD in shoulder, upper back, lower back and hand/wrist were significantly different under a variety of combined job task and psychosocial characteristics (P < 0.05 or P < 0.01). The more physical and psychological loads, the higher prevalence of WMSDs were revealed. By using multivariate analyses, a potential interactive effect was found in terms of the WMSDs symptoms in hand/wrist, shoulder, upper back and lower back after adjusted by work year, age, and gender.
  
  
  CONCLUSIONS
  Higher physical load and greater psychosocial risk are more frequent self-reported symptoms of WMSDs than those of lower exposures. Ergonomic intervention strategies aimed at reducing the incidence of WMSDs should not only be focused on control of physical work factors but also psychosocial risks of relevance.
authors.affiliation: Department of Occupational and Environmental Health, School of Public Health, Peking University, Beijing 100191, China.
authors.forename: Lei
authors.initials: L
authors.lastname: Cao
authors.forename: Wei-wei
authors.initials: WW
authors.lastname: DU
authors.forename: Sheng
authors.initials: S
authors.lastname: Wang
authors.forename: Xin-ning
authors.initials: XN
authors.lastname: Yang
authors.forename: Li-hua
authors.initials: LH
authors.lastname: He
authors.forename: Xue-mei
authors.initials: XM
authors.lastname: Dong
authors.forename: Hou-han
authors.initials: HH
authors.lastname: Lu
authors.forename: Song-gen
authors.initials: SG
authors.lastname: Chen
authors.forename: Xiao-ou
authors.initials: XO
authors.lastname: Cao
authors.forename: Yan
authors.initials: Y
authors.lastname: Xu
mesh_terms: D000293:Adolescent; D000328:Adult; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009140:Musculoskeletal Diseases / Q000209:etiology* / Q000523:psychology*; D009784:Occupational Diseases / Q000209:etiology* / Q000523:psychology*; D013315:Stress, Psychological; D011795:Surveys and Questionnaires; D013647:Task Performance and Analysis; D055815:Young Adult