Table 2. Chest radiographic patterns in TB and non-TB patients.
| Radiographic findings | TBa (n=214) n (%) | Non-TB (n=189) n (%) | Risk ratio (95% CI) | p-value |
| Normal chest radiograph | 26 (12) | 37 (20) | 0.62 (0.39–0.98) | 0.04 |
| Focal upper lobe opacities | 31 (14) | 23 (12) | 1.19 (0.72–1.97) | 0.50 |
| Diffuse opacities | 140 (75)b | 90 (60)c | 1.25 (1.07–1.46) | 0.003 |
| Consolidation | 98 (46) | 74 (39) | 1.17 (0.93–1.47) | 0.18 |
| Reticulonodular opacities | 96 (45) | 22 (12) | 3.85 (2.53–5.87) | <0.001 |
| Cavities | 38 (18) | 13 (7) | 2.58 (1.42–4.70) | 0.001 |
| Nodules | 31 (14) | 12 (6) | 2.28 (1.21–4.31) | 0.008 |
| Miliary pattern | 4 (2) | 0 | – | – |
| Intrathoracic lymphadenopathy | 47 (22) | 27 (14) | 1.54 (1.00–2.37) | 0.05 |
| Pleural effusion | 34 (16) | 30 (16) | 1.00 (0.64–1.57) | 1.00 |
CI, confidence interval; TB, tuberculosis.
aTB was defined microbiologically based on a positive culture or a positive smear.
bOut of a total of 186 TB patients with available data.
cOut of a total of 150 non-TB patients with available data.