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Table 2 The performance of a trigger screening for detection of VAP and CLABSI

From: Development of trigger-based semi-automated surveillance of ventilator-associated pneumonia and central line-associated bloodstream infections in a Dutch intensive care

  Group 2 (gold standard) Sensitivity, % (95% CI) Specificity, % (95% CI) PPV, % (95% CI) NPV, % (95% CI)
Group 1 (trigger-based) VAP No VAP Total VAP 12/13 409/409 12/12 409/410
VAP 12 0 12 92.3% 100.0% 100.0% 99.8%
No VAP 1 409 410 (63.90 to 98.72) (99.09 to 100.00) (73.35 to 100.00) (98.64 to 99.96)
Total VAP 13 409 422     
  CLABSI No CLABSI Total CLABSI 22/24 529/529 22/22 529/531
CLABSI 22 0 22 91.7% 100.0% 100.0% 99.6%
No CLABSI 2 529 531 (72.96 to 98.73) (99.30 to 100.00) (84.43 to 100.00) (98.64 to 99.94)
Total CLABSI 24 529 553     
  1. PPV, positive predictive value; NPV, negative predictive value.