Academic emergency medicine : official journal of the Society for Academic Emergency Medicine
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Despite the health benefits of organized sports, high school athletes are at risk for lower extremity sports-related injuries (LESRIs). The authors documented the epidemiology of LESRIs among U.S. high school athletes. ⋯ While LESRIs occur commonly in high school athletes, team- and gender-specific patterns exist. Emergency department staff will likely encounter such injuries. To optimize prevention strategies, ongoing surveillance is needed.
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Missing data are commonly encountered in clinical research. Unfortunately, they are often neglected or not properly handled during analytic procedures, and this may substantially bias the results of the study, reduce study power, and lead to invalid conclusions. ⋯ In part 1, the authors will describe relatively simple approaches to handling missing data, including complete-case analysis, available-case analysis, and several forms of single imputation, including mean imputation, regression imputation, hot and cold deck imputation, last observation carried forward, and worst case analysis. In part 2, the authors will describe in detail multiple imputation, a more sophisticated and valid method for handling missing data.