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Prevention of traumatic nail gun injuries in apprentice carpenters: use of population-based measures to monitor intervention effectiveness.

Authors
Lipscomb-HJ; Nolan-J; Patterson-D; Dement-JM
Source
Am J Ind Med 2008 Oct; 51(10):719-727
NIOSHTIC No.
20034595
Abstract
INTRODUCTION: nail guns are responsible for a significant injury burden in residential construction. Risk, based on hours of work, is particularly high among apprentice carpenters due in part to more frequent exposure to tool use. METHODS: nail gun injuries were evaluated over 3 years among carpenters enrolled in two apprenticeship programs in the Midwest (2.3 million residential work hours observed) following initiation of training and a voluntary ANSI standard change calling for safer sequential triggers on framing nailers. Injury rates, based on hours of tool use, were calculated yearly. Rates and adjusted rate ratios were calculated with Poisson regression. Attributable risk percent (AR%) and population attributable risk (PAR%) were calculated yearly for modifiable independent risk factors for injury including lack of training in tool use and type of trigger mechanism on tools being used. RESULTS: as apprentices received training and safer trigger mechanisms became more widespread, injury rates decreased significantly (31%). While school training and hands-on mentoring were both important, injury rates were lowest among apprentices who received both. Although injury rates changed over the observation period, the relative risk comparing trigger mechanisms did not; contact trip triggers consistently carried a twofold risk. CONCLUSIONS: although training and safer trigger use both increased, because of the relative prevalence of training and trigger exposures in this population, the engineering solution consistently had the potential to make more difference in population risk. Our findings demonstrate the utility of observational methods including measures of population-based risk in monitoring intervention effectiveness and making recommendations that lead to injury reduction.
Keywords
Construction; Construction-materials; Construction-workers; Construction-equipment; Construction-industry; Injuries; Injury-prevention; Epidemiology; Surveillance-programs; Statistical-analysis; Training; Workplace-studies; Work-operations; Accident-prevention; Accidents; Power-tools
Contact
Hester J. Lipscomb, Division of Occupational and Environmental Medicine, Duke University Medical Center, Box 3834, Durham, NC 27710
CODEN
AJIMD8
Publication Date
20081001
Document Type
Journal Article
Email Address
hester.lipscomb@duke.edu
Funding Type
Cooperative Agreement; Construction
Fiscal Year
2009
NTIS Accession No.
NTIS Price
Identifying No.
Cooperative-Agreement-Number-U54-OH-008307
Issue of Publication
10
ISSN
0271-3586
Priority Area
Construction
Source Name
American Journal of Industrial Medicine
State
NC; MO; MD
Performing Organization
Center to Protect Workers' Rights
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