SUlYllYlary. The present study was conducted on 15IO persons between 1 December 1973 and 31 December 1980. Of these, 1478 (97·9 per cent) were traced by questionnaire. Of those traced, 1252 were male and 226 were female. There were 194 deaths of whom 160 were male and 34 female. The main causes of death are cardiovascular, renal, respiratory, suicide and neoplastic. Compared with the 1973 study, there has been a marked decrease in deaths due to renal disease and a marked increase in deaths due to suicide and liver disease and the abuse of alcohol. A study of the new deaths allowed one to note a relative mortdlity rate to be 186 per cent for partial paraplegics, 209 per cent for partial tetraplegics; 318 per cent for complete paraplegics and 767 per cent for complete quadriplegics. The approximate application of these rates to current (1975-77) mortality tables permitted the calculation of theoretically derived life expectation at various ages. These indicated an improved life expectation for all categories.

1969 and 1970 amounted to 244; in 1969, 15.9 per million population and in 1970, 13.6

Abstract. Spinal cord injury resulting in paraplegia or tetraplegia has from time im memorial led to early death. Mortality figures as high as 80 per cent over a few years have been noted.Following World War II as a consequence of the intensive care extended to these casualties, the mortality has been significantly diminished. The mortality has been studied on three occasions by the authors and two previous papers have been published, the first in 1961 and the second in 1968.The present paper is based on a mortality and longevity study which covers the period from 1 January 1945 to 30 November 1973, an interva1of29 years less one month. It deals with the mortality of spinal cord injured persons following treatment in Lyndhurst Lodge Hospital and reveals that there has been significant improvement over the period of study.