RESUMEN
We analyzed 13,456 consecutive cases judged between August 1990 and April 1992. Mortality was registered up to 12 months after judgement. Total incapacity was determined in 4,158 cases (30.9 percent), parcial incapacity in 1,340 (9,9 percent) and minor incapacity in 7,958 (59,1 percent). Osteoarticular diseases were the main cause of disability in 4,460 patients (33,1 percent) and 77,8 percent of patients with malignant tumors were considered as having total incapacity. Mortality was 17 percent among subjects with total incapacity, 1,5 percent among those with partial disability and 1 percent among those with minor disability. The cause of death was related to the main disabling disease in 94 percent of subjects with total incapacity and 66,6 percent of those with partial incapacity. Osteoarticular diseases are the main cause of inability among workers ascribed to a private pension system