title: Multiple dimensions of work-related risk factors and their relationship to work ability among industrial workers in Iran.
abstract: OBJECTIVE
  The present study was designed to investigate the simultaneous effects of physical, psychosocial and other work-related risk factors on the work ability index (WAI) score among industrial workers.
  
  
  METHODS
  This study used a cross-sectional design with a questionnaire survey. A total of 280 workers were included in the study. Data were collected using three questionnaires including the Persian version of the WAI, the Persian version of the job content questionnaire and an author-developed measure (to assess work-related factors, health-related factors and socio-demographic characteristics).
  
  
  RESULTS
  The majority of the participants were young, but they had poor WAI scores (mean 37.3 ± 6.4) and 44.3% of them had poor or moderate work ability. Occupational accidents and injuries were found to be the strongest predictors of WAI scores. Additionally, there was a strong association between WAI scores and supervisor support, skill discretion, occupational training, sleep quality, work nature and educational level.
  
  
  CONCLUSIONS
  Intervention programs should focus on improving supervisor support, sleep quality, job skills and knowledge and on decreasing physical and mental work demands. Additionally, implementing a comprehensive occupational health and ergonomics program for controlling and reducing hazardous working environments and occupational injury rates should be considered.
authors.affiliation: a Faculty of Medical Sciences , Tarbiat Modares University , Iran.
authors.forename: Hamidreza
authors.initials: H
authors.lastname: Mokarami
authors.affiliation: a Faculty of Medical Sciences , Tarbiat Modares University , Iran.
authors.forename: Seyed Bagher
authors.initials: SB
authors.lastname: Mortazavi
authors.affiliation: b Department of Educational Psychology , Kharazmi University , Iran.
authors.forename: Ali
authors.initials: A
authors.lastname: Asgari
authors.affiliation: c Research Center for Health Sciences , Shiraz University of Medical Sciences , Iran.
authors.forename: Alireza
authors.initials: A
authors.lastname: Choobineh
authors.affiliation: d Colorado Injury Control Research Center , Colorado State University , USA.
authors.forename: Lorann
authors.initials: L
authors.lastname: Stallones
mesh_terms: D000062:Accidents, Occupational / Q000523:psychology* / Q000706:statistics & numerical data; D000328:Adult; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D007221:Industry; D007492:Iran / Q000453:epidemiology; D008297:Male; D008875:Middle Aged; D060051:Occupational Injuries / Q000453:epidemiology / Q000523:psychology*; D012044:Regression Analysis; D012307:Risk Factors; D011795:Surveys and Questionnaires; D014937:Work / Q000523:psychology* / Q000706:statistics & numerical data*; D014938:Work Capacity Evaluation; D000066477:Work Performance
keywords: industrial workers; job content questionnaire; psychosocial factors; work ability index; work-related risk factors