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  Indian J Med Microbiol
 

Figure 2: Receiver-operator characteristic-curve along with 95% confidence bounds for calculating the cut-off value for APACHE II score to predict severity. The area under the receiver-operator characteristic curve = 0.893; standard error = 0.0317; 95% confidence intervals = 0.840–0.933; z-statistic = 12.385; significance level, P (Area = 0.5) =0.0001. ROC= Receiver-operator characteristic curve; APACHE II= acute physiology and chronic health evaluation II

Figure 2: Receiver-operator characteristic-curve along with 95% confidence bounds for calculating the cut-off value for APACHE II score to predict severity. The area under the receiver-operator characteristic curve = 0.893; standard error = 0.0317; 95% confidence intervals = 0.840–0.933; <i>z</i>-statistic = 12.385; significance level, <i>P</i> (Area = 0.5) =0.0001. ROC= Receiver-operator characteristic curve; APACHE II= acute physiology and chronic health evaluation II