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Table 1 Demographics and case characteristics of EIB and TB-AOI cases - Alberta, 2004–14
| EIB (n = 22) | TB-AOI (n = 20) | |
|---|---|---|
| Female gender – no. (%) | 17 (77) | 11 (55) |
| Age – years | ||
| Median (IQR) | 43 (8.3) | 38 (17.8) |
| Country of origin – no. (%) | ||
| TB-HBC* | 18 (82) | 14 (70) |
| History of latent TB†− no. (%) | 4 (18) | 4 (20) |
| Duration of Symptoms – months (years) | n = 19 | n = 15 |
| Median | 24 (2) | 9 (0.8) |
| IQR | 30 (2.5) | 13 (1.1) |
| Diagnostics‡ | ||
| TST | n = 16 | n = 16 |
| Range - induration (mm) | 10–30 | 12–40 |
| Median (IQR) | 18 (7) | 17.5 (7.8) |
| IGRA | n = 13 (7 had TST) | n = 15 (11 had TST) |
| Positive result – no. (%) | 12 (92) | 13 (87) |
| Chest X-ray | n = 22 | n = 20 |
| TB changes§ – no. (%) | 4 (18) | 1 (5) |
| Tissue Biopsy Pathology# | n = 17 | |
| Granulomatous inflammation | 15 (88) | No samples obtained for |
| Necrobiosis | 9 (53) | pathology |
| Panniculitis | 10 (59) | |
| Vasculitis | 8 (47) | |
