Independent factors that increase mortality are immunosuppression (OR 2, 3; 95% CI 1, 4 - 3, 86, p < 0, 01), mechanical ventilation (OR 14, 6, 95% CI 5, 4 - 39, 6; p <0, 01), catheter (OR 1, 83; 95% CI 1, 2 - 2, 7; p < 0, 01), urinary catheter (OR 2, 0; 95% CI 1, 2 - 3, 8; p <0, 05), nosocomial infections (OR 1, 63; 95% CI 1, 1 - 2, 4; p<0, 05), nosocomial infections caused of K pneumoniae (OR 2, 27; 95% CI 1, 1 - 4, 6; p<0, 05), A Baumanii (OR 1, 76; 95% CI 1, 1 - 3, 35; p < 0, 05).