@article{ref1,
title="Playground equipment injuries in a large, urban school district",
journal="American journal of public health",
year="1984",
author="Schaefer, C. and Sprunger, L. W. and Sobolewski, S. and Boyce, W. Thomas",
volume="74",
number="9",
pages="984-986",
abstract="We studied the epidemiologic features of playground equipment-related injuries occurring in a large, urban school district over a two-year period. Nurses in each of the district's 68 elementary schools completed self-coded reporting forms on all injuries meeting standardized criteria. A total of 511 equipment-related injuries were reported, an incidence of 8.9 injuries per 1,000 student-years. One-fourth of the injuries were severe, and climbing equipment was disproportionately represented among playground equipment associated with injuries. Extreme variability was found among school-specific rates of equipment injury, with schools at the two extremes separated by as much as a 40-fold difference in incidence. Two school characteristics--smaller student enrollments and the presence of alternative educational programs--were significantly associated with higher equipment-related injury rates.",
language="",
issn="0090-0036",
doi="",
url="http://dx.doi.org/"
}