Table 5 Immunological parameters of 84 patients with NTM lung disease and 47 non-NTM BE patients
NTM lung disease patients N = 84 | Non-NTM BE patients N = 47 | P value | ||
|---|---|---|---|---|
Positive RF | 5 (6.0%) | 11 (23.4%) | 0.01 | |
RF level (0–9.9 IU/mL)*, median (IQR) | 16 (15,92) | 18 (15,86) | 0.88 | |
Positive FANA | 11 (13.1%) | 2 (4.3%) | 0.14 | |
FANA titer, median (IQR) | 40 (40,50) | 60 (40,80) | 0.74 | |
Positive IGRA | 38 (45.2%) | 26 (55.3%) | 0.28 | |
Patients with low level of immunoglobulins | ||||
IgG | (700–1700 mg/dL)* | 1 (1.2%) | 0 (0%) | 1.00 |
IgA | (90–400 mg/dL)* | 3 (3.6%) | 0 (0%) | 0.55 |
IgM | (45–230 mg/dL)* | 6 (7.1%) | 4 (8.5%) | 0.75 |
C3 | (70–150 mg/dL)* | 1 (1.2%) | 1 (2.1%) | 1.00 |
C4 | (10–35 mg/dL)* | 1 (1.2%) | 1 (2.1%) | 1.00 |