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Table 4 Sensitivity, Specificity, positive predictive value, negative predictive value, positive and negative likelihood ratio for CRBSI (n = 114)

From: Local signs at insertion site and catheter-related bloodstream infections: an observational post hoc analysis using individual data of four RCTs

  Prevalence of local sign Sensitivity Specificity PPV NPV Positive LR Negative LR
≥ 1 local sign (n = 1938) 13.3 40.4 86.9 2.4 99.5 3.09 0.69
Redness (n = 1633) 11.2 28.1 88.9 2.0 99.4 2.54 0.81
Pain (n = 59) 0.4 1.7 99.6 3.3 99.2 4.46 0.99
Non-purulent discharge (n = 251) 1.7 6.1 98.3 2.8 99.3 3.64 0.95
Purulent discharge (n = 102) 0.7 11.4 99.4 12.7 99.3 18.55 0.99
  1. PPV, positive predictive value; NPV, negative predictive value; LR likelihood ratio