Variable Details

Available Studies

ROS, MAP, MARS, Clinical Core, LATC

Scaled? 

Not Scaled

Variable Type 

Cross-Sectional

Variable Name 

headinjrloc_bl

Categories

Medical Conditions

Head injury loss of consciousness
Self-reported history of head injury with loss of consciousness at baseline

History of head injury with loss of consciousness at baseline is self-reported based on two questions.

Q1: Have you EVER had a head injury?
1 = Yes (then branch to next question)
2 = No

IF YES then:

Q2: Have you EVER lost consciousness because of a head injury?
1 = Yes
2 = Suspect or possible
3 = No

Value Coding
0 No history of head injury - No head injury reported or reported head injury without loss of consciousness (includes suspect or possible loss of consciousness)
1 History of head injury with loss of consciousness - Reported at baseline

Note: these questions are asked at each annual assessment and the longitudinal version of this variable is available upon request