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Older Motor Vehicle Drivers Involved in Injury Crashes in San Diego County Barbara M. Stepanski, MPH Leslie Upledger Ray, MA, MPPA Patti Murrin, RN, MPH.

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Presentation on theme: "Older Motor Vehicle Drivers Involved in Injury Crashes in San Diego County Barbara M. Stepanski, MPH Leslie Upledger Ray, MA, MPPA Patti Murrin, RN, MPH."— Presentation transcript:

1 Older Motor Vehicle Drivers Involved in Injury Crashes in San Diego County Barbara M. Stepanski, MPH Leslie Upledger Ray, MA, MPPA Patti Murrin, RN, MPH Alan M. Smith, MPH, PhD(C) County of San Diego Health and Human Services Agency, Division of Emergency Medical Services

2 County of San Diego Division of Emergency Medical Services EMS Problem: Elderly Drivers Concerns –Physical limitations –Possibly higher crash rates –More severe injuries due to fragility of aging bodies Proposed license restrictions –Reverse graduated licensing

3 County of San Diego Division of Emergency Medical Services EMS Population Nationally, 70+ age group increased 2.1 times faster than the total population from 1989 to 1998 Locally, the population over 55 is expected to more than double by 2020 The number of drivers and collisions are expected to increase proportionally

4 County of San Diego Division of Emergency Medical Services EMS Research Questions What is the crash rate in elderly? –Compared with other age groups –Severity What factors contribute to crashes involving elderly drivers? What impact do older drivers have on the overall population?

5 County of San Diego Division of Emergency Medical Services EMS Data Sources Statewide Integrated Traffic Records System (SWITRS), FY 99/00 San Diego County Emergency Medical Services (EMS) Prehospital Database, FY 99/00 Department of Motor Vehicles (DMV) Drivers License Information

6 County of San Diego Division of Emergency Medical Services EMS Data Examined Prehospital –Age groups –Gender –Ethnicity –Restraints –Hour –Paramedic Run Outcome SWITRS –Incident Location –Fault

7 County of San Diego Division of Emergency Medical Services EMS Licensed Drivers by Age Source: California Department of Motor Vehicles, DL information report 01/01/00

8 County of San Diego Division of Emergency Medical Services EMS Percent Licensed by Age Source: California Department of Motor Vehicles, SANDAG population estimates, January 2000

9 County of San Diego Division of Emergency Medical Services EMS Prehospital Responses: Motor Vehicle Drivers 8800 Emergency Patients 1372 Age 55 and Older (15.6%) –49% Male –74% White (when known) –Time: 11a.m. – 4 p.m.

10 County of San Diego Division of Emergency Medical Services EMS Prehospital Prehospital Responses to Motor Vehicle Drivers, by Age Source: County of San Diego, Health and Human Services Agency Division of Emergency Medical Services; Prehospital Database, FY 9900

11 County of San Diego Division of Emergency Medical Services EMS Prehospital Response Rate per 100,000 Population, by Age Prehospital patients / Population X 100,000 Source: County of San Diego, Health and Human Services Agency Division of Emergency Medical Services; Prehospital Database, FY 99/00

12 County of San Diego Division of Emergency Medical Services EMS Prehospital Response Rate per 100,000 Licensed Drivers, by Age MV Drivers prehospital patients / # licensed drivers X 100,000 Source: County of San Diego, Health and Human Services Agency Division of Emergency Medical Services; Prehospital Database, FY 9900

13 County of San Diego Division of Emergency Medical Services EMS Gender by Age Group Source: County of San Diego, Health and Human Services Agency Division of Emergency Medical Services; Prehospital Database, FY 9900.

14 County of San Diego Division of Emergency Medical Services EMS Race/Ethnicity of Drivers Seen by Prehospital Personnel: 55 years and up Source: County of San Diego, Health and Human Services Agency Division of Emergency Medical Services; Prehospital Database, FY 9900; SANDAG Population Estimates, January 2000.

15 County of San Diego Division of Emergency Medical Services EMS Hour Call Received, Patients 55 Years and Older, Monday - Friday Source: County of San Diego, Health and Human Services Agency Division of Emergency Medical Services; Prehospital Database, FY 9900.

16 County of San Diego Division of Emergency Medical Services EMS Hour Call Received by Age Group of Victim, Monday - Friday Source: County of San Diego, Health and Human Services Agency Division of Emergency Medical Services; Prehospital Database, FY 9900.

17 County of San Diego Division of Emergency Medical Services EMS Percent of Injured Drivers in Moderate or Acute Status by Age Source: County of San Diego, Health and Human Services Agency Division of Emergency Medical Services; Prehospital Database, FY 96/97 Percent

18 County of San Diego Division of Emergency Medical Services EMS Restraint Use - Drivers 55 and Over Source: County of San Diego, Health and Human Services Agency Division of Emergency Medical Services; Prehospital Database, FY 99/00

19 County of San Diego Division of Emergency Medical Services EMS Percent of Drivers Unrestrained, by Age Source: County of San Diego, Health and Human Services Agency Division of Emergency Medical Services; Prehospital Database, FY 99/00

20 County of San Diego Division of Emergency Medical Services EMS SWITRS Percent of Drivers at Fault by Age* Source: SWITRS Database, FY 99/00 *Drivers at fault/Drivers in injury collisions %

21 County of San Diego Division of Emergency Medical Services EMS SWITRS Rate (per Licensed Drivers) of At-Fault Collision by Age* Source: SWITRS Database, FY 99/00 *Drivers at fault/Licensed drivers

22 County of San Diego Division of Emergency Medical Services EMS SWITRS Road Type by Age of Driver at Fault Source: SWITRS Database, FY 99/00

23 County of San Diego Division of Emergency Medical Services EMS Violation Category by Age of Driver at Fault Source: SWITRS Database, FY 99/00

24 County of San Diego Division of Emergency Medical Services EMS Leading Violation Categories by Age Source: SWITRS Database, FY 99/00

25 County of San Diego Division of Emergency Medical Services EMS Collision Type by Age of Driver at Fault Source: SWITRS Database, FY 99/00

26 County of San Diego Division of Emergency Medical Services EMS Conclusions Crash rates and at-fault rates are lower in seniors than previously thought Crash rates of 55-64 and 65-74 are comparable to middle-aged drivers Highest crash and fault rates in youngest drivers (16-24) Percent at fault comparable to 16-24 year-olds Crashes –Side streets –More in the middle of the day (younger: rush hours) –Violation: auto right of way –Collision type: broadside

27 County of San Diego Division of Emergency Medical Services EMS Conclusions (cont.) Results question the proposed restrictions on elderly drivers, which may be detrimental to their independence Results support the need to focus safe driving interventions on young drivers

28 County of San Diego Division of Emergency Medical Services EMS Acknowledgments San Diego Paramedics/EMTs, Prehospital Agencies and Hospitals SANDAG San Diego County Law Enforcement Agencies

29 County of San Diego Division of Emergency Medical Services EMS Contact Information Alan M. Smith County of San Diego Health and Human Services Agency Emergency Medical Services 6255 Mission Gorge Road San Diego, CA 92120 (619) 285-6429 phone (619) 285-6531 fax Alan.Smith@sdcounty.ca.gov


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