[Development of a probability index for suicide risk in depression]

Authors have developed a Suicidal Risk Index for depressed. This index included: sex, duration of current phase, suicidal ideas presents in last months, attempts previous and a number of contacts with a psychiatrist. The predictive validity of index is good. Sensibility: 0.73; specificity: 0.91; probability pi: 0.93; false positives rate: 9%; Kw: 0.65.