Use different national surveys for the numerator and denominator in estimating the incidence rates and the confidence intervals of a variety of injuries
Tin-Chi Lin, PhD, Santosh K. Verma, ScD, MPH, MBBS, Helen R. Marucci-Wellman, ScD, Joanna L. Willetts, MS and Melanye J. Brennan, MS
Liberty Mutual Research Institute for Safety, Hopkinton, MA