Pronogsis factors of P aeruginosa: inappropriate emperic antibiotic (OR 4.76, 95% CI 1.53 - 14.84, p < 0.01), late-onset (OR 3.58, 95% CI 1.14 - 11.28, p < 0.01), and of Acinetobacter spp: inappropriate emperic antibiotic (OR 3.46; 95% CI 0.96 - 12.45; p < 0.01).