1. Council of State & Territorial Epidemiologists June 4, 2012 / Omaha, NE Leslie Seymour, MD, MPH Jon Roesler, MS Anna Gaichas, MS Mark Kinde, MPH Injury and Violence Prevention Minnesota Department of Health injury.prevention@health.state.mn.us Trends in Minnesota Motorcycle Crash Injury

2. Background Methods Results Discussion

3. Background

4. 1979-1988

5. 1989-1998

6. 1999-2008

7. 1979-881989-98 1999-2008

8. Is engine size increasing? The average engine size in all classes of motorcycles involved in fatal crashes has risen. Motorcycles with engine sizes larger than 1,400 cubic centimeters: 29 percent in 2010 9 percent in 2000 2 percent in 1997 http://www.iihs.org/research/qanda/motorcycles.aspx

9. Methods

10. Data MHA (Minnesota Hospital Association) Universal Billing Data DPS (Department of Public Safety) Crash Data Death Certificates CODES Data (Crash Outcome Data Evaluation System) - Linked Hospital and Crash Data DVS (Department of Vehicle Services) Data - Licensed Operators - Registered Vehicles Data looked at was restricted to drivers.

11. Results

12. Minnesota Motor Vehicle Crashes 2001-2010 Rate Rates are incidents per 100,000 driver licenses/permits

13. Minnesota Motorcycle Crash Trend 2001-2010 Rate Rates are incidents per 100,000 motorcycle licensed operators MN Crash Facts

14. MN Motorcycle-related Death Trend 2001-2010 Rate Rates are incidents per 100,000 motorcycle licensed operators Death Certificates

15. Rate of MN Motorcycle-Related Injuries Rate Rates are incidents per 100,000 motorcycle licensed operators Hospital UB data

16. Rate of Minnesota TBI Resulting from Motorcycle Crashes Rates are incidents per 100,000 motorcycle licensed operators Hospital UB data Rate

17. Rate of TBI Motorcycle & Other Motor Vehicle Crashes Rate Rates are incidents per 100,000 motorcycle licensed operators & 100,000 licensed/permitted drivers

18. Rates of Severity of TBI by Cause If in a crash Other MVC, Severe Rates are incidents per 100,000 crashes Rate

19. Potential Influencing Factors Increased numbers of motorcycles/riders Gender Age-group Location: Urban vs. Rural Helmet Use Impairment Speed

20. Percent Increase Licensed Operators & Registered Vehicles ----- Licensed Drivers ---- Registered Vehicles N N Cars & TrucksMotorcycles 24% 61% 8% 12% DVS Data

21. Number of Injured Motorcyclists Gender by year N Year Hospital UB data 33%

22. Rate of Injured Motorcyclists Gender by year Rate Rates are incidents per 100,000 motorcycle licensed operators Hospital UB data

23. Motorcycle Injuries by Age Group 2001-2010 N Hospital UB data

24. Rate of Motorcycle Injury by Age Group Rates are incidents per 100,000 motorcycle licensed operators Rate Hospital UB data

25. Age Groups with Largest Increases in Injuries N Year Hospital UB data

26. Location of Crashes: Urban vs. Rural 2004 - 2007 N Year Crash Data

27. Motorcyclist Impairment in Crashes 2004-2007 Unknown N Year Crash Data

28. Helmet Use by Motorcyclists that Crashed, 2004 - 2007 N Year Crash Data

29. Speed Reported as Factor in Motorcycle Crash Crash Data N

30. Motorcycle Crash: Fatal vs. Nonfatal Logistic Regression Results 2004 - 2005 FactorOdds RatioP-value Impaired2.00.0144 Rural2.20.0003 41-50 years old2.30.0040 61-70 years old3.70.0040 Speeding3.8<.0001 Adjusting for above variables, gender and helmet use. Codes Data

31. Motorcycle Crash: Injured vs. Non-Injured Logistic Regression Results 2004-2005 FactorOdds RatioP-value Rural1.20.020 31-40 years old1.30.043 Speeding1.30.008 51-60 years old1.50.003 Male1.50.006 Adjusting for above variables, impairment and helmet use. Codes Data

32. Motorcycle Crash: TBI vs. Other Injury Logistic Regression Results 2004 -2005 FactorOdds RatioP-value 51-60 years old 1.50.029 No Helmet 1.50.0002 Speeding 1.70.0001 Impaired 2.5<.0001 Adjusting for above variables, gender and location. Codes Data

33. Discussion

34. Summary Motorcycle crash trend in Minnesota has been relatively stable over the last 10 years. Minnesota does have an increasing trend of motorcycle crash injuries and deaths. 40% of these injuries are TBIs. Speed was the only factor that was significant in all three outcomes.

35. What’s Next?

36. Contact Information Leslie Seymour, MD, MPH Epidemiologist Injury & Violence Prevention Unit Minnesota Department of Health leslie.seymour@state.mn.us 651-201-5489