Fig. 2From: Does ventilator-associated event surveillance detect ventilator-associated pneumonia in intensive care units? A systematic review and meta-analysisThe receiver operating characteristic (ROC) curves for ventilator-associated conditions (VAC) and infection-related VAC (IVAC) for the detection of ventilator-associated pneumonia (VAP). Scatter points were plotted by the pooled sensitivity and 1-specificity of each included study and trend lines were fitted by the log function. ROCs were not plotted for possible and probable VAP, because studies that provided original sensitivity and specificity data were scarceBack to article page