Abstract
The Japan Society of Neurotraumatology constructed "Japan Neurotrauma Data Bank (JNTDB)" including 721 patients with severe head injury provided by the 10 clinical centers, from 1998 to 2000. The data was analyzed from several perspectives. In the present paper, the author analyzed 602 patients with a Glasgow Coma Scale less than 9 from the point of view of their treatment and outcome. Especially, the comparison of outcome between operated cases and non-operated cases was analyzed. Differences of choice of treatment between the centers are also analyzed. Finally, some comparison between JNTDB and "the Traumatic Coma Data Bank" reported from the United State of America in 1991 was also performed.