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  • Title: Factors that distinguish serious versus less severe strain and sprain injuries: an analysis of electric utility workers.
    Author: Kelsh MA, Fordyce TA, Lau EC, Mink PJ, Morimoto LM, Lu ET, Yager JW.
    Journal: Am J Ind Med; 2009 Mar; 52(3):210-20. PubMed ID: 19097081.
    Abstract:
    BACKGROUND: Occupational sprain and strain injuries are one of the most common types of nonfatal occupational injuries and a significant source of lost workdays. This study examines factors associated with severe work-related sprain/strain injuries to the back, shoulder, and knees. METHODS: A synthetic case-control study was performed (controls were selected from the same pool of utility workers as cases). Cases included all electric utility workers who had experienced a severe work-related sprain/strain injury to the back, knee, or shoulder. Primary controls were selected from all workers who had sustained a minor injury. Secondary controls were selected from employees with a minor sprain/strain injury to the back, knee, or shoulder. Multivariate logistic regression models were used to estimate odds ratios and 95% confidence intervals. RESULTS: Workers 41 years and older were more likely to have experienced severe shoulder sprain/strain injuries [Age 41-50: OR = 3.62, 95% CI: 1.71-7.65; age 51 and older: OR = 4.49, 95% CI: 1.89-10.67] and severe back sprain/strain injuries [Age 41-50: OR = 1.70, 95% CI: 1.06-2.33; age 51 and older: OR = 1.5, 95% CI: 0.90-2.52]. Line workers and maintenance workers had an increased risk of serious sprain/strain injuries. Gender and day of week were not significantly associated with sprain/strain injuries. DISCUSSION: Though this study is limited by available data, future studies may benefit from this preliminary examination of occupational and demographic characteristics associated with serious sprain/strain injuries among electric utility workers.
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