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

ValueCoding
0No history of head injury - No head injury reported or reported head injury without loss of consciousness (includes suspect or possible loss of consciousness)
1History 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