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Table 1 Clinical characteristics of the study population

From: Serial interferon-gamma release assays for latent tuberculosis in dialysis patients with end stage renal disease in a Korean population

Clinical characteristics Total (n = 93) HD (n = 43) PD (n = 50) P-value
Mean age, years (range) 51.6 (23–74) 52.8 (31–74) 50.6 (23–72) 0.41
Gender (Male : Female) 43:50 19:24 24:26 0.71
BMI, kg/m2, mean ± SD 23.0 ± 3.7 22.6 ± 3.1 23.3 ± 4.3 0.44
Cause for ESRD     
 DM 34 (36.6) 19 (44.2) 15 (30.0) 0.23
 HTN 44 (47.3) 19 (44.2) 25 (50.0) 0.73
aOthers 15 (16.1) 5 (11.6) 10 (20.0) 0.66
Use of steroid 2 (2.2) 1 (2.3) 1 (2) 1.0
Previous TB treatment (%) 0 (0) 0 (0) 0 (0) 1.0
Presence of BCG scar (%) 62/93 (66.7) 19/43 (44.2) 43/50 (86.0) 0.001
Baseline QFT-IT + (%) 39/93 (41.9) 19/43 (44.2) 20/50 (40.0) 0.68
2nd QFT-IT + (%) 32/93 (34.4) b19/43 (44.2) 13/50 (26.0) 0.07
Old TB lesion (%) 35/93 (37.6) 14/43 (32.6) 21/50 (42.0) 0.35
LTBI treatment among initial QFT-IT + (%) 18/39 (46.2) 5/19 (26.3) 13/20 (65.0) 0.02
 Isoniazid: Rifampicin 10:8 3:2 7:6 1.0
  1. aOthers include autoimmune diseases, glomerulonephritis, polycystic kidney diseases, and unknown diseases
  2. bOne of 19 patients showed conversion from negative to positive result
  3. HD Hemo-dialysis, PD peritoneal dialysis, BMI body mass index, TB tuberculosis, LTBI latent TB infection, BCG bacille Calmette-Guérin, QFT-IT QuantiFERON-TB Gold In-Tube, SD standard deviation