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. 2020 Jan 9;15(1):e0227636. doi: 10.1371/journal.pone.0227636

Fig 4. Algorithm for discrimination between PTB and non-PTB patients using the classification tree method.

Fig 4

Serum markers were used to differentiate between PTB and non-PTB patients according to the extent of infiltration using the classification tree. The cut-off values used to discriminate between the patient groups are shown on the uppermost line. The second number shows the number of patients with PTB. The lowest line shows the number of non-PTB patients affected by the cut-off value. IFN-γ, interferon gamma; MMP-1, matrix metalloprotein-1; MMP-9, matrix metalloprotein-9; PTB, pulmonary tuberculosis.