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Table 2 Economic costs (Euros) per hospital admission according to the antibiotic susceptibility pattern of nosocomial Pseudomonas aeruginosa (PA) isolates. Barcelona (Spain), 2005–2006 (n = 402)

From: Hospital costs of nosocomial multi-drug resistant Pseudomonas aeruginosa acquisition

  Non-resistant PA Resistant PA Multi-drug resistant PA P *
  N = 149 (37.1%) N = 119 (29.6%) N = 134 (33.3%)  
Fixed cost     
 Mean (95% CI) 3,983 (3,168-4,797) 9,597 (7,184-12,009) 11,421 (8,858-13,983) <0.001
 Median 2,194 (1,673-2,629) 4,844 (3,809-6,860) 5,079 (3,922-7,024)  
Variable cost     
 Mean (95% CI) 950 (701–1,200) 2,754 (1,504-4,005) 3,844 (2,742-4,946) <0.001
 Median 368 (250–523) 897 (670–1,502) 1,218 (812–1,867)  
Pharmacy cost     
 Mean (95% CI) 473 (331–615) 1,964 (873–3,055) 2,781 (1,863-3,699) <0.001
 Median 135 (83–182) 594 (423–765) 725 (481–1,096)  
Total cost     
 Mean (95% CI) 4,933 (3,911-5,956) 12,351 (8,858-15,845) 15,265 (11,834-18,696) <0.001
 Median 2,803 (2,026-3,431) 6,079 (4,829-8,049) 6,655 (4,771-10,200)  
  1. * p value derived from Kruskal Wallis test. CI: confidence interval.