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Table 1 General information for participants

From: Screening and identification of a six-cytokine biosignature for detecting TB infection and discriminating active from latent TB

Characteristic

Biomarker screening

Biomarker validation

Clinical validation

ATB

LTBI

CON

ATB

LTBI

CON

ATB

LTBI

CON

Number (no.) of participants

28

34

26

76

69

71

91

24

79

Median age (range)

46 (26–55)

43 (15–62)

39 (21–58)

45 (18–72)

41 (19–67)

43 (21–64)

42 (27–69)

40 (23–74)

39 (21–71)

Males, no. (%)

16 (57.1%)

15 (44.1%)

12 (46.2%)

42 (55.3%)

32 (46.4%)

35 (49.3%)

54 (59.3%)

13 (54.2%)

42 (53.2%)

HIV infected, no. (%)

0 (0%)

0 (0%)

0 (0%)

2 (2.6%)

0 (0%)

0 (0%)

1 (1.1%)

0 (0%)

0 (0%)

BCG status

 Vaccinated

17 (60.7%)

25 (73.5%)

23 (88.5%)

56 (73.7%)

55 (79.7%)

59 (83.1%)

58 (63.7%)

17 (70.8%)

54 (68.4%)

 Unvaccinated

6 (21.4%)

5 (14.7%)

2 (7.7%)

17 (22.4%)

12 (17.4%)

8 (11.3%)

29 (31.9%)

5 (20.8%)

20 (25.3%)

 Unknown

5 (17.9%)

4 (14.3%)

1 (3.8%)

3 (3.9%)

2 (2.9%)

4 (5.6%)

4 (4.4%)

2 (8.3%)

5 (6.3%)

QFT results

 Negative

3 (10.7%)

0 (0%)

26 (100%)

10 (13.2%)

0 (0%)

71 (100%)

17 (18.7%)

0 (0%)

79 (100%)

 Positive

25 (89.3%)

34 (100%)

0 (0%)

66 (86.8%)

69 (100%)

0 (0%)

74 (81.3%)

24 (100%)

0 (0%)

 Extrapulmonary TB

4 (14.3%)

–

–

30 (39.5%)

–

–

13 (27.7%)

–

–

Microbiologic test

 AFB positive

23 (82.1%)

–

–

60 (78.9%)

–

–

66 (72.5%)

–

–

 Culture positive

20 (71.4%)

–

–

55 (72.4%)

–

–

56 (61.5%)

–

–

  1. ATB active tuberculosis, LTBI latent tuberculosis infection, CON TB uninfected subjects, AFB acid fast bacilli