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  Indian J Med Microbiol
 

Figure 1 ROC curve of optimal cut-off level of PaCO2 (≥59.5) associated with treatment failure with sensitivity of 77.8% and specificity of 66.2% (figure A). ROC curve of optimal cut-off level of PaO2 (≤43.5) associated with treatment failure with sensitivity of 81.5 % and specificity of 69.6% (figure B).

Figure 1 ROC curve of optimal cut-off level of PaCO<sub>2</sub> (≥59.5) associated with treatment failure with sensitivity of 77.8% and specificity of 66.2% (figure A). ROC curve of optimal cut-off level of PaO<sub>2</sub> (≤43.5) associated with treatment failure with sensitivity of 81.5 % and specificity of 69.6% (figure B).