Combining statistics from two national complex surveys to estimate injury rates per hour exposed and variance by activity in the USA.

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Injury prevention : journal of the International Society for Child and Adolescent Injury Prevention, ISSN: 1475-5785, Vol: 22, Issue: 6, Page: 427-431

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Lin, Tin-Chi; Marucci-Wellman, Helen R.; Willetts, Joanna L.; Brennan, Melanye J.; Verma, Santosh K.
Medicine; Clinical Epidemiology; Community Health and Preventive Medicine; Epidemiology
article description
A common issue in descriptive injury epidemiology is that in order to calculate injury rates that account for the time spent in an activity, both injury cases and exposure time of specific activities need to be collected. In reality, few national surveys have this capacity. To address this issue, we combined statistics from two different national complex surveys as inputs for the numerator and denominator to estimate injury rate, accounting for the time spent in specific activities and included a procedure to estimate variance using the combined surveys.