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. 2019 Oct 30;221(6):1025–1026. doi: 10.1093/infdis/jiz539

Figure 1.

Figure 1.

Quantitative Quantiferon (QFT) values among QFT-positive subjects by tuberculin skin test (TST)-positivity. Boxplots show distributions of QFT-Plus quantitative values in TST-positive (N = 222, TST ≥10-mm induration) and TST-negative (N = 12, TST <10-mm induration) subjects (all human immunodeficiency virus-negative). Comparison of individuals with 0–5 mm versus 5–9.9 mm TST shows similar distributions of interferon (IFN)-gamma values (data not shown). Comparison of quantitative values by Mann-Whitney test, P = .128. Comparison using 4 IU/mL cutoff value as proposed by Andrews et al [9], represented by red line, P = .063.