Table 2—

Procalcitonin(PCT) threshold values and ventilator-associated pneumonia outcome

PCTSens.Spec.PPVNPVPLRNLR
D1 0.42 ng·mL−187.565.558.390.52.540.19
D7 1.04 ng·mL−18086.266.692.65.780.23
D1 >1.0# ng·mL−1319371714.420.67
D4 >1.5# ng·mL−1257933721.190.69
D7 >0.5# ng·mL−1807250912.850.11
  • Data are presented as % unless otherwise stated. Sens.: sensitivity; Spec.: specificity; PPV: positive predictive value; NPV: negative predictive value; PLR: positive likelihood ratio; NLR: negative likelihood ratio; D: day. #: threshold values suggested by Luyt et al. 11.