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Study provides new evidence of back belts' effectiveness
D R McIntyre1, K M Bolte, M H Pope
1InterLogics Inc., Hillsborough, N.C., USA.
Occupational Health & Safety (Waco, Tex.)
|December 1, 1996
Summary
A UCLA study of 36,000 Home Depot employees found that mandatory back support belts significantly reduced acute low-back injuries by over 30%. This large-scale epidemiological research demonstrates the effectiveness of simple countermeasures in preventing workplace injuries.
Area of Science:
- Occupational Health
- Epidemiology
- Public Health
Background:
- Low-back injuries represent a significant portion of workers' compensation claims, costing U.S. employers billions annually.
- The effectiveness of back support devices for preventing workplace injuries has been a subject of debate, with differing positions from research institutions and manufacturers.
- The National Institute for Occupational Safety and Health (NIOSH) previously concluded insufficient evidence to recommend back supports for uninjured workers.
Purpose of the Study:
- To investigate the impact of mandatory back support device usage on the incidence of acute low-back injuries.
- To assess the effectiveness of back supports as a personal protective equipment in a large-scale industrial setting.
Main Methods:
- A longitudinal epidemiological study involving nearly 36,000 employees at Home Depot stores in California.
- Data collected from 1989 to 1994, encompassing over 101 million work hours.
- Analysis of injury rates before and after the implementation of a mandatory back support policy in early 1990, with high compliance (over 98%).
Main Results:
- A significant reduction in the rate of acute low-back injuries was observed, decreasing from 30.6 to 20.2 per million work hours post-implementation.
- The positive effect of back supports was consistent across different demographics, including both sexes, age groups (younger and over 55), and varying lifting demands.
- The study's findings indicate a statistically significant protective effect of mandatory back support usage.
Conclusions:
- Mandatory use of back support devices is an effective strategy for significantly reducing acute low-back work injuries.
- The study provides strong evidence supporting the use of back supports as personal protective equipment in occupational settings.
- These findings challenge previous conclusions and highlight the importance of large-scale epidemiological research in informing workplace safety policies.