Related Experiment Videos
Risk factors for back injury in 31,076 retail merchandise store workers
L I Gardner1, D P Landsittel, N A Nelson
1Division of Safety Research, National Institute for Occupational Safety and Health, Morgantown, WV, USA.
American Journal of Epidemiology
|October 16, 1999
Summary
Material handlers with physically demanding jobs and shorter employment durations face higher risks of back injuries. These findings highlight key risk factors for workplace strain and sprain injuries in the retail sector.
Area of Science:
- Occupational Health
- Ergonomics
- Injury Epidemiology
Background:
- Work-associated musculoskeletal disorders, particularly back injuries, are a significant concern in physically demanding occupations.
- Material handlers in retail environments frequently engage in lifting and moving merchandise, exposing them to potential strain and sprain injuries.
Purpose of the Study:
- To identify and quantify risk factors associated with work-associated strain or sprain back injuries among material handlers.
- To investigate the relationship between physical work requirements, duration of employment, and back injury rates in a large cohort.
Main Methods:
- A cohort study of 31,076 material handlers across 260 US retail merchandise stores.
- Analysis of injury rates based on job physical demands and duration of employment.
- Stratification of data by turnover rates to assess the robustness of findings.
Main Results:
- Workers in jobs with higher physical work requirements had significantly higher back injury rates (3.64 per 100 person-years) compared to those with lesser demands (1.82 per 100 person-years).
- Shorter employment duration was strongly associated with increased injury risk, with a rate ratio of 3.53 for short versus long duration.
- While males had higher unadjusted injury rates, this was confounded by greater physical work demands in certain job categories.
Conclusions:
- The greatest physical work requirements and the shortest duration of employment are key risk factors for back injuries in material handlers.
- Worker turnover dynamics may influence the interpretation of time-related risk factors, necessitating careful consideration in future research.
- Findings underscore the need for targeted ergonomic interventions and safety protocols for high-risk workers in the retail industry.