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A case-crossover study of occupational laceration injuries in pork processing: methods and preliminary findings.

Authors
Lander-L; Sorock-GS; Stentz-TL; Eisen-EA; Mittleman-M; Hauser-R; Perry-MJ
Source
Occup Environ Med 2010 Oct; 67(10):686-692
NIOSHTIC No.
20038858
Abstract
Objectives: Meatpacking remains a hazardous and largely unexamined industry. Despite prevention efforts, laceration injuries, among others, remain high. We estimated the magnitude of associations between transient exposures such as equipment malfunction, performing an unusual work task, rushing, and occurrence of laceration injuries. Methods: Injured workers were recruited from two porkprocessing plants, one in Iowa and one in Nebraska. A telephone interview was conducted within 7 days of the injury, on average to collect information on fixed and transient exposures preceding the injury event. Casecrossover methodology was used to evaluate case and control data within the same subject, thus controlling for between-subject confounding. A ManteleHaenszel estimator for person-time data was used to estimate the relative risks of injury and transient exposures of interest. Results: Of the 362 workers with lacerations between April 2006 and October 2007, 153 (42%) were interviewed (74% male, 41% Hispanic). Forty-eight per cent were injured by a knife or a knife-like object such as scissors or a band saw. Other sources of lacerations included sharp edges and hooks. Tool sharpening was associated with the highest RR of laceration (RR 8.4, 95% CI 5.4 to 12.8) followed by slipping (RR 74.8, 95% CI 30.5 to 183.3), equipment malfunction (RR 3.8, 95% CI 2.8 to 5.3), and performing an unusual task (RR 3.7, 95% CI 2.6 to 5.2). Being tired, distracted, or rushing were not significant risk factors for a laceration. Conclusions: Aspects of the physical environment and work practices appear to be significant risk factors for laceration injury in meatpacking. Personal risk factors were less significant in this study.
Keywords
Accident-analysis; Accident-prevention; Exposure-assessment; Exposure-methods; Injuries; Injury-prevention; Meat-packing-industry; Questionnaires; Risk-factors; Statistical-analysis
Contact
Melissa J Perry, Harvard School of Public Health, Department of Environmental Health, 665 Huntington Avenue, Building 1 Room 1413, Boston, MA 02115
CODEN
OEMEEM
Publication Date
20101001
Document Type
Journal Article
Email Address
mperry@hsph.harvard.edu
Funding Type
Grant
Fiscal Year
2011
NTIS Accession No.
NTIS Price
Identifying No.
Grant-Number-R01-OH-008174
Issue of Publication
10
ISSN
1351-0711
Source Name
Occupational and Environmental Medicine
State
NE; MA; MD; CA
Performing Organization
Harvard School of Public Health
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