Individual characteristics

• Age.
• Sex.
• First three digits of postal code (not always collected).
• Past medical history (not always collected).
• medications used by patient in past 30 days (not always collected).

Crash related characteristics 

• whether the patient is a driver or a passenger (note: we only started collecting passenger data in BC & ON since 2020).
• Month & year of the crash.
• Time of crash: Available as four-hour time blocks (0201-0600, 0601-1000, etc.).
• Whether the crash happened on a weekend or a statutory holiday.
• Type of crash: single- or multiple-vehicle crash.
• Type of vehicle: passenger car, van or light truck, motorcycle,  or large commercial vehicle.
• Brief description of the crash.
• Patient’s mental status at scene, and upon arrival in ED (this information is not always collected).
• Alcohol level at ED < 6 hours from the time of the accident (this information is not always collected).

Treatment related items

• Whether the patient is transferred to ED by ambulance or not.
• disposition from ED: home, expired in ED, or admitted to hospital.
  • If admitted, length of stay.
• GCS at scene and at ED
• Medications given at scene, and medication given upon arrival.
• Whether CT scan is ordered.