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Table 2 Results of the randomized studies of diagnostic techniques

From: Is bronchoalveolar lavage with quantitative cultures a useful tool for diagnosing ventilator-associated pneumonia?

   28-day mortality (%) Antibiotic usage
Study Sample size Invasive arm Clinical arm Invasive arm Clinical arm
Sanchez-Nieto et al. [5] 51 45.8 26.7 ND ND
Ruiz et al. [6] 76 37.8 46.1 13 ± 4a 12 ± 4
Sole Violan et al. [7] 88 22.2 20.9 ND ND
Fagon et al. [8] 413 30.9 38.8 11.5 ± 9.0b 7.5 ± 7.6
Canadian Critical Care Trials Group [1] 739 18.9 18.4 10.4 ± 7.5c 10.6 ± 7.9
  1. ND, not determined. aRuiz et al. [6] reported the total duration of antibiotic treatment; p = 0.48. bFagon et al. [8] reported antibiotic-free days; p < 0.002. cThe Canadian Critical Care Trials Group [1] reported antibiotic-free days; p = 0.86.