Table 1. Characteristics of the 215 subjects divided according to the diagnosis in the three study groups.
| Healthy N (%) |
LTBI N (%) |
Active TB N (%) |
|
|---|---|---|---|
|
54 (25) |
88 (41) | 73 (34) | |
|
Age Median (IQR) |
46 (32–63) |
46 (35.5–65) |
39 (31–61.5) |
| Immigrants | 27 (50) | 45 (51) | 48 (66) |
| BCG vaccinated | 21 (38.8) | 38 (43.2) | 32 (43.8) |
| TST (mm) | |||
| <5 | 54 (100) | 0 (0) | 0 (0) |
| ≥5 and <10 | 0 (0) | 5 (5.8) | 0(0) |
| ≥10 and <15 | 0 (0) | 13 (14.7) | 8 (11) |
| ≥15 | 0 (0) | 70 (79.5) | 65 (89) |
| QFT-G-IT | |||
| Negative | 50 (92.65) | 5 (5.7) | 4 (5.48) |
| Positive | 3 (5.5) | 80 (90.9) | 68 (93.15) |
| Indeterminate | 1 (1.85) | 3 (3.4) | 1 (1.37) |
| Fluorescence microscopy | |||
| Positive | Not performed |
0 (0) | 42 (57.5) |
| Negative | Not performed |
24 (100) | 31 (42.5) |
| PCR-based tests | |||
| Positive | Not performed |
0 (0) | 73(100) |
| Negative | Not performed |
24 (100) | 0 (0) |
| MTB isolation from culture | |||
| Positive | Not performed |
0 (0) | 73(100) |
| Negative | Not performed |
24 (100) | 0 (0) |