We reviewed pre-admission diagnosis in all patients referred for inpat
ient brain injury neurorehabilitation over a 5-year period (n = 193).
All patients more than 1 month postinjury with diagnosis of coma or pe
rsistent vegetative state were selected for review (n = 49). We found
that 18 (37%) of these patients were diagnosed inaccurately. Inaccurat
e diagnosis was more likely if the injury was more than 3 months befor
e admission and the etiology of injury was trauma (48%). Results were
statistically significant when traumatic injuries were compared with a
noxic injuries (p < 0.10). Errors in diagnosis may result from confusi
on in terminology, lack of extended observation of patients, and lack
of skill or training in the assessment of neurologically devastated pa
tients.