This is the only prospective study of suicides in Singapore. Out of a total of 1,873 patients registered & treated in a psychiatric practice from years 1968-1976, 25 patients were found to have committed suicide. Of these, 14 were found to suffer from schizophrenia & 11 from depression. The suicide risk of all the patients under different categories were noted & where possible calculated. It was found that a schizophrenic patient who has attempted suicide carries the highest suicide risk.