The association of socioeconomic status and psychosocial and physical workplace factors with musculoskeletal injury in hospital workers.
Gillen M; Yen IH; Trupin L; Swig L; Rugulies R; Mullen K; Font A; Burian D; Ryan G; Janowitz I; Quinlan PA; Frank J; Blanc P
Am J Ind Med 2007 Apr; 50(4):245-260
BACKGROUND: The combined effect of socioeconomic, organizational, psychosocial, and physical factors on work-related musculoskeletal disorders (WRMSDs) were studied in a heterogeneous, socioeconomically diverse sample (cases and their matched referents) of hospital workers. METHODS: Cases were defined by a new acute or cumulative work-related musculoskeletal injury; referents were matched by job group, shift length, or at random. Information was obtained through telephone interviews and on-site ergonomics observation. Questionnaire items included sociodemographic variables, lost work time, work effectiveness, health status, pain/disability, and psychosocial working conditions using Effort Reward Imbalance (ERI) and Demand-Control (DC) models. Two multivariate models were tested: Model 1 included occupation as a predictor; Model 2 included education-income as a predictor. RESULTS: Cases reported greater pain, disability, lost time, and decreased work effectiveness than the referents. Model 1 was statistically significant for neck/upper extremity injury (Chi-square = 19.3, P = 0.01), back/lower extremity injury (Chi-square = 14.0, P = 0.05), and all injuries combined (Chi-square = 25.4, P = 0.001). "Other Clinical" occupations (34% mental health workers) had the highest risk of injury (OR 4.5: 95%CI, 1.7-12.1) for all injuries. The ERI ratio was a significant predictor for neck and upper extremity (OR 1.5: 95%CI, 1.1-1.9) and all injuries (OR 1.3; 95%CI, 1.04-1.5), per SD change in score. CONCLUSIONS: In this study, the risk of WRMSDs was more strongly influenced by specific psychosocial and physical job-related exposures than by broad socioeconomic factors such as education and income.
Biological-effects; Demographic-characteristics; Emergency-care; Emergency-responders; Emergency-treatment; Engineering; Ergonomics; Exposure-assessment; Exposure-levels; Exposure-methods; Health-care-facilities; Health-care-personnel; Health-hazards; Injury-prevention; Medical-facilities; Medical-monitoring; Medical-personnel; Medical-services; Medical-surveys; Musculoskeletal-system; Musculoskeletal-system-disorders; Occupational-exposure; Occupational-hazards; Occupational-health-services; Occupational-psychology; Occupational-sociology; Occupations; Physiological-effects; Physiological-measurements; Physiological-response; Psychological-effects; Psychological-factors; Psychological-responses; Psychological-stress; Questionnaires; Risk-analysis; Risk-factors; Statistical-analysis; Work-areas; Work-environment; Work-practices;
Author Keywords: work-related musculoskeletal disorders; socioeconomic status; hospitals; effort-reward imbalance; demand-control model; ergonomics; hospital occupations
Marion Gillen, Department of Community Health Systems, University of California, San Francisco, School of Nursing, 2 Koret Way, Box 0608, San Francisco, CA 94143-0608
American Journal of Industrial Medicine
University of California, Berkeley