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Table 6 Outcome indicators

From: Impact of random safety analyses on structure, process and outcome indicators: multicentre study

Year Hospital 1 Hospital 2
2012 2013 p 2012 2013 p
Number of patients 967 1018   939 927  
APACHE II 10.4 11.2 0.39 14.9 14.4 0.72
ICU average LOS (days) 3.3 4.0 0.09 7.7 7.9 0.07
ICU gross mortality (%) 4.0 5.1   19.0 16.1  
ICU standardized mortality by APACHE 2012 (%) 4.0 4.3 0.23 19.0 16.5 0.15
VAP rate (No. of VAP episodes/1000 days MV) 4.2 0.9   7.9 4.0  
IDR VAP2013/2012 (95% confidence interval) 0.2 (0.05–0.9)   0.02 0.5 (0.3–0.9)   0.03
CRB rate (No. of CRB episodes/1000 days of central venous catheter) 3.9 1.5   2.8 4.8  
CRB IDR2013/2012 (95% confidence interval) 0.4 (0.1–1.2)   0.42 1.7 (0.7–3.9)   0.10
  1. N number, VAP ventilator-associated pneumonia, MV mechanical ventilation, CRB central venous catheter-related bacteraemia , IDR incidence density ratio