• Injury · Oct 2014

    Multicenter Study

    External factors and the incidence of severe trauma: Time, date, season and moon.

    • Carolina I A Pape-Köhler, Christian Simanski, Ulrike Nienaber, and Rolf Lefering.
    • Institute for Research in Operative Medicine (IFOM), Private University of Witten/Herdecke, Cologne, Germany.
    • Injury. 2014 Oct 1;45 Suppl 3:S93-9.

    BackgroundTo detect whether external factors (time of day, day of week, month and season, lunar phases) influence incidence and outcome of severely injured trauma patients.Patients And MethodsA retrospective cohort analysis of the TraumaRegister DGU(®) (TR-DGU) was carried out over a period of 10 years (January 2002-December 2011). Data of 35,432 primary admitted patients from Germany with a severe trauma (Injury Severity Score (ISS) >15) were analysed in this study. For the outcome evaluation transferred patients were excluded as well as those who did not have a valid Revised Injury Severity Classification (RISC) prognostic score. The outcome analysis could be performed in 31,596 (89.2%) patients. Incidence, demographics and injury pattern were analysed. For outcome analysis the observed hospital mortality was compared with the expected prognosis.ResultsTime of day was the factor that showed the highest variation in trauma incidence due to rush hours. Saturday was the day with the highest accident rate. Most accidents in the night happened on weekends. June and July were the months with the highest trauma rate with a large portion of two-wheel drivers. The days of year with the lowest trauma incidence rate were those between Christmas and New Year, and the highest rate was observed on May 1st. The outcome of the trauma patients was close to the prognosis in all investigated subgroups.ConclusionThere are clear differences in incidence but not in outcome of the patients due to external factors.Copyright © 2014 Elsevier Ltd. All rights reserved.

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