Fig. 1.

Changes of interferon-gamma levels over 4 months in those with positive QFT-IT at baseline. Paired changes of interferon-gamma levels in QFT-IT tests after 4 months in the LTBI treatment group (a) and in the LTBI no treatment group (b), as well as in the hemodialysis group (c) and in the peritoneal dialysis group (d). The horizontal bold lines at pre- and post-treatment values represent the median interferon-gamma values (a median 1.40 with IQR 0.8–12.0 and median 0.51 with IQR 0.3–3.4, b median 3.19 with IQR 0.8–10.1 and median 1.29 with IQR 0.7–3.7, c median 1.55 with IQR 0.7–3.7 and median 0.87 with IQR 0.6–3.4, d median 5.03 with IQR 0.9–15.4 and median 1.31 with IQR 0.2–4.5). QFT-IT: QuantiFERON-TB Gold In-Tube; IQR: interquartile range