Motor Vehicle Crash Variables and Outcomes for Drivers

Age Group

Age at the time of crash. Age groupings were formed in a way that was believed to be the most useful.

Alcohol Use

Defined as a citation for alcohol use and based on the judgment of the investigating officer that alcohol use contributed to the crash.

Belt Use

Defined as use of safety belts, or safety belts used with shoulder belts. Non-use is defined as non-use of safety belts, lack of safety belts in the vehicle, or use of shoulder belts only.

County

County where the crash occurred

Crash

Used in place of more commonly-used term "accident."

Crash Type (Defined to be mutually exclusive categories.)

All Types

Total of all crash types.

Multivehicle Headon

Vehicles collided and the point of initial impact was the front of the vehicle.

Multiple Vehicle Other

More than one vehicle was involved and it was not a head-on crash.

Rollover

The accident type was an overturn, or the first point of impact on the vehicle was the top of the vehicle.

Single Vehicle- Fixed Object

Only one vehicle was in the crash and it hit a fixed object.

Single Vehicle Other

Only one vehicle was in the crash and it was not a fixed-object crash.

Driver Sex

Defined as male or female.

Ejection

The driver was either partially or completely ejected from the vehicle.

Head Injury

Linked emergency room or inpatient record indicated the driver received a head injury according to the International Classification of Diseases 9th Edition, Clinical Modification (ICD-9-CM). ICD-9-CM codes used to define a head injury are E800-801, E80 3-804, and E850-854.

Medical Treatment (Defined by the kind of record that was linked to the crash record.)

Died

Driver died in the hospital or outside of a hospital.

Emergency Room

The driver was treated in the emergency room, but was not admitted to the hospital and did not die.

Hospitalized

The driver was hospitalized and did not die.

None

The drive was not treated in the emergency room, was not admitted to the hospital and did not die.

Speed Zone

The speed limit posted for the location of the crash.

Vehicle Types

All-Other
Vehicles

Includes drivers of buses, motor homes, farm equipment and construction equipment.

All Terrain Vehicles

Includes drivers of all-terrain vehicles, including 3-5 wheel types.

Bicycles

Includes drivers of bicycles.

Big Trucks

Includes drivers of single unit and tractor-trailer trucks.

Cars

Includes drivers of cars, station wagons, sport utility vehicles and vans.

Cycles, Bikes-ATVs

Combination of the three categories "Motorcycle, "Bicycles" and "All Terrain Vehicles."

Motorcycle

Includes drivers of mopeds as well as drivers of motorcycles that have two or more wheels.

Pickup Trucks

Includes drivers of pick-up trucks.