| Pulmonary sarcoidosis | 21 | 26 (16.5–43.3) | 4 (2.8–9.5) | 3 (2.5–6) |
| Bacterial infection/pneumonia | 18 | 11 (5.5–29) | 0.6 (0.4–1.4) | 15 (8–30) |
| Tuberculosis | 13 | 51 (30–61) | 1 (0.2–2.8) | 3 (1–9) |
| Pneumocystis jirovecii pneumonia | 6 | 15 (13–19) | 0 (0–0.3) | 8 (4–24) |
| Non-tuberculous mycobacteria | 5 | 21 (14–23) | 3 (2–5.7) | 12 (3–33) |
| Other interstitial lung disease | 4 | 8 (5.5–35.1) | 0 (0.1–0.5) | 21 (12–25) |
| Mediastinal lymph node sarcoidosis | 4 | 10 (4–17.8) | 1 (1–1.3) | 8 (6–25) |
| Extrathoracic sarcoidosis | 3 | 16 (14.9–35.4) | 1 (1–1.3) | 8 (6–25) |
| Fungal pneumonia | 3 | 8 (8–8) | 1 (0.61–0.65) | 4 (3–5.5) |
| Bronchiectasis | 3 | 3 (2.5–4) | 0 (0.2–1.8) | 14 (10.5–17.5) |
| Unknown | 24 | 9 (4.3–15.5) | 2 (0.8–2.1) | 11 (5.3–21.8) |