Agreed - medical evidence is of little practical help since they are dealing with the aftermath of a crash. What is more relevant is the liklihood and severity of crashes. An area they have no special expertise as many studies published by medics all too sadly demonstrate. Knowledge of Student's t-test does not make a data analyst of you.Do you really think that the medical evidence is unequivocal, and should be believed "just because a medic said it"?
Its a bit like when a meteorologist wanders into the world of climatology.