anchor: 16 In another study by Sommers and colleagues15 involving two trauma centers, patients who were injured in vehicular crashes and had a positive BAC were asked, To what extent do you believe your alcohol consumption was responsible for this injury?
positive: Vehicle accident victims brought to the trauma center with a positive BAC were asked how much they thought drinking alcohol played a part in causing the injury.
negative: Vehicle accident victims with a positive BAC were never asked if they thought their drinking caused the injury.