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Table 1

From: Comparison between quantitative and qualitative culture of tracheal aspirates in the diagnosis of ventilator associated pneumonia

  Qualitative culture ≥ 105 cfu/ml ≥ 106 cfu/ml
Sensitivity (%) 92 69 26
Specificity (%) 11 41 76
PPV (%) 17 19 19
NPV (%) 88 87 83