Length of retrograde amnesia after head injury: a revised formula.
Our earlier retrospective study presented a formula relating lengths of retrograde amnesia to length of post-traumatic amnesia (PTA) and length of time since injury (Crovitz, Horn and Daniel, 1983). The earlier study derived the formula from 27 cases with retrograde amnesia. The present study adds another 75 cases, and we discuss similarities and differences between the two samples.
Crovitz
H F
HF
Veterans Administration Medical Center, Durham, N.C.
Daniel
W F
WF
D000328:Adult; D000647:Amnesia / Q000209:etiology*; D000648:Amnesia, Retrograde / Q000209:etiology*; D006259:Craniocerebral Trauma / Q000150:complications*; D005260:Female; D006801:Humans; D008297:Male; D008962:Models, Theoretical; D013223:Statistics as Topic; D011795:Surveys and Questionnaires; D013997:Time Factors