PRESENT INVESTIGATION
METHOD
From a total of 430 patients with head injuries admitted to the Boston City Hospital between July 1942 and September 1944 a series of 200 was selected for study. Two hundred and thirty patients were eliminated because no adequate follow-up observations could be obtained, because the patients were under 15 or over 55 years of age or because they were vagrants or chronic alcohol addicts. The patients had all sustained recent injuries; they were seen on admission to the hospital, were closely followed during their stay in the hospital and were observed at intervals of two to three months thereafter. The present report deals with their posttraumatic mental symptoms and the relation of these symptoms to the other fields of investigation.The group of examiners consisted of neurologists, psychiatrists, a psychometrist, an electroencephalographer and a social worker.
MATERIAL
Age, Sex and National Stock.
—The age distribution of