Fig. 4.

Receiver operating characteristics (ROC) curves and accuracy for the diagnosis of active tuberculosis (ATB). A ROC curves of different indicators for the diagnosis of ATB. B Sensitivity and specificity corresponding to the cutoff values. The dotted line indicates 80% sensitivity and 80% specificity. C The dotted line represents the cutoff value of CD4⁺IFN-γ⁺CD38⁺CD27⁻/CD4⁺ as 1.34 × 10^–4. ATB active tuberculosis, LTBI latent tuberculosis infection, NTM non-tuberculous mycobacterium pulmonary disease, OD other respiratory diseases, HC healthy control