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  Indian J Med Microbiol
 

Figure 3: A dot plot showing the OD450 of IgG antibody responses to CFP32 antigen in Tunisian group (aTB patients, n = 34, and contacts, n = 26), sub-Saharan African groups (aTB patients, n = 43, and suspected individuals, n = 23), and Latin American groups (aTB patients, n = 34, and suspected individuals, n = 49). The dotted line indicates the optimal cutoff value calculated based on the ROC curve. Bold lines indicate medians of anti-CFP32 IgG in each group. *P < 0.05, **P < 0.01, ***P < 0.001. OD: Optical density, IgG: Immunoglobulin G, CFP32: Culture filtrate protein 32, aTB: Active tuberculosis, ROC: Receiver operating characteristic

Figure 3: A dot plot showing the OD<sub>450</sub> of IgG antibody responses to CFP32 antigen in Tunisian group (aTB patients, <i>n</i> = 34, and contacts, <i>n</i> = 26), sub-Saharan African groups (aTB patients, <i>n</i> = 43, and suspected individuals, <i>n</i> = 23), and Latin American groups (aTB patients, <i>n</i> = 34, and suspected individuals, <i>n</i> = 49). The dotted line indicates the optimal cutoff value calculated based on the ROC curve. Bold lines indicate medians of anti-CFP32 IgG in each group. *<i>P</i> < 0.05, **<i>P</i> < 0.01, ***<i>P</i> < 0.001. OD: Optical density, IgG: Immunoglobulin G, CFP32: Culture filtrate protein 32, aTB: Active tuberculosis, ROC: Receiver operating characteristic