Table 3.
Risk of TB in subtypes of SNV after diagnosis.
| MPA | GPA | EGPA | PAN | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| After diagnosis | # of Events | PY | IR/1,000 PY (95% CI) | # of Events | PY | IR/1,000 PY (95% CI) | # of Events | PY | IR/1,000 PY (95% CI) | # of Events | PY | IR/1,000 PY (95% CI) |
| TB <3 months | 8 | 205.34 | 38.96 (17.80–72.51) | 4 | 135.84 | 29.45 (9.14–68.40) | 2 | 139.93 | 14.29 (2.38–44.11) | 2 | 132.72 | 15.07 (2.51–46.50) |
| 3 months ≤ TB <6 months | 5 | 173.99 | 28.74 (10.30–61.76) | 3 | 122.76 | 24.44 (6.08–63.35) | 1 | 131.98 | 7.58 (4.32–33.33) | 1 | 125.01 | 8.00 (0.46–35.19) |
| 6 months ≤ TB <12 months | 2 | 304.36 | 6.57 (1.09–20.28) | 3 | 219.67 | 13.66 (3.40–35.40) | 0 | 248.31 | – | 2 | 236.16 | 8.47 (1.41–26.13) |
| TB ≥12 months | 2 | 1,599.62 | 1.25 (0.21–3.86) | 7 | 1,479.66 | 4.73 (2.03–9.15) | 1 | 1,646.01 | 0.61 (0.03–2.67) | 8 | 1,895.49 | 4.22 (1.93–7.86) |
TB, tuberculosis; SNV, systemic necrotizing vasculitides; MPA, microscopic polyangiitis; GPA, granulomatosis with polyangiitis; EGPA, eosinophilic granulomatosis with polyangiitis; PAN, polyarteritis nodosa; PY, person-years; IR/1,000 PY, incidence rate/1,000 person-years; CI, confidence interval.