Table 1. Clinical characteristics of patients tested for AFB stain/culture, TB PCR and Xpert MTB/RIF assay in bronchial washing specimena.
| Characteristics, N (%) | Patients with pulmonary TB (n = 130) | Patients with the diagnosis of other than TBb (n = 190) | P value |
|---|---|---|---|
| Sex, male | 84 (64.62) | 126 (66.32) | 0.75 |
| Age, years | 61.99±16.90 | 64.64±17.26 | 0.80 |
| Body mass index (BMI), kg/m2, | 22.17±13.81 | 20.74±4.51 | 0.00 |
| Previous history of pulmonary TB | 41 (31.54) | 47 (24.74) | 0.18 |
| Smoking status | 0.29 | ||
| Never smoker | 54 (41.54) | 89 (47.09) | |
| Ex-smoker | 81 (24.81) | 52 (27.51) | |
| Current smoker | 68 (21.32) | 35 (18.52) | |
| Smoking amount, pack-year | 15.42±20.00 | 16.27±21.74 | 0.34 |
| Comorbidities | |||
| Diabetes mellitus | 23 (17.69) | 29 (15.26) | 0.56 |
| Chronic kidney disease | 1 (0.77) | 5 (2.63) | 0.23 |
| HIV/AIDS | 0 (0) | 1 (0.53) | 0.41 |
| Malignancy | 11 (20.37) | 41 (15.41) | 0.37 |
| Gastrectomy | 7 (5.38) | 7 (3.68) | 0.47 |
| Radiologic findings | |||
| Cavity | 30 (23.26) | 21 (11.05) | 0.01 |
| Consolidation | 75 (57.69) | 96 (50.53) | 0.34 |
| Clustered nodules | 86 (66.15) | 94 (49.47) | 0.01 |
| Ground glass opacity | 19 (14.62) | 38 (20.00) | 0.22 |
| Pleural effusion | 17 (13.08) | 14 (7.37) | 0.17 |
| Atelectasis | 18 (13.85) | 24 (12.63) | 0.68 |
| Extent of involved lungc, number of region | 2.30±1.73 | 2.10±1.44 | 0.02 |
aData are presented in number (%) or mean ± standard deviation.
b Pneumonia (98, 51.6%), NTM(30, 15.8%), lung cancer (18, 9.5%), bronchitis and bronchiolitis(17, 8.9%), others (27, 14.2%)
c Number of involved regions when the lung was divided in six regions.