Figure 2: Receiver operative characteristic (ROC) curve for (A): PTB (category I PTB, category II PTB and MDR). Area under ROC curve 0.9083, 95% CI (confidence interval) 0.8739 to 0.9428, Std. error 0.01758, P<0.001. Small bars on the ROC curve showing the cut-offs. (B): EPTB (tuberculous meningitis and tubercular pleural effusion) area under ROC curve: 0.7571, 95% CI 0.6589 to 0.8554, Std. error 0.05013, P<0.001.