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Fig. 3 | Critical Care

Fig. 3

From: Brain natriuretic peptide to predict successful liberation from mechanical ventilation in critically ill patients: a systematic review and meta-analysis

Fig. 3

Bi-variate estimate of sensitivity and specificity for measures of either ∆BNP or ∆BNP% in studies that included SBT failure (group 1) and studies that excluded SBT failure (group 2) from liberation failure analysis. TP: True positive; TN: True negative; FP: False positive; FN: False negative. This diagram illustrates the bi-variate analysis performed on 5 studies and provides an estimate of sensitivity and specificity for studies regardless of the method of BNP measurement (DBNP or DBNP%) and regardless of inclusion or exclusion of SBT failure from the liberation failure analysis (group 1 or 2). This was obtained through analysis of the TP, TN, FP and FN obtained in studies that provided full description of their population and outcomes

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Critical Care

ISSN: 1364-8535