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LETTER |
Robin Taylor Wilson is with the Department of Public Health Sciences, Penn State College of Medicine, Hershey, Pa. Robert B. Wallace is with the College of Public Health, University of Iowa, Iowa City.
Correspondence: Requests for reprints should be sent to Robin Taylor Wilson, PhD, Epidemiology Division, Department of Public Health Sciences, Penn State College of Medicine, 600 Centerview Drive, Suite 2200, Mail Code A210, Hershey, PA 17033-0855 (e-mail: rwilson@psu.edu).
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We read with interest the letter by Icks et al. concerning the declining trend in hip fracture incidence among young adults in Germany.1 The authors used the German National Register of Hospital Discharges to identify hip fractures occurring between 1995 and 2004, and reported a decrease in hip fracture incidence among both men and women younger than 40 years old during this time period.
There are important methodological details left out of this letter, including the disease or surgical codes included for case identification, whether the National Register includes all hospitals in Germany or a sampling of discharges, how changes
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