Table 3.
Clinical characteristics of 429 patients with PTB examined by bronchoscopy
| Characteristics | Overall (n = 429) | EBTB(+) (n = 233) | EBTB(−) (n = 196) | P-value |
|---|---|---|---|---|
| Age (years), Median (range) | 48 (18–97) | 47 (18–97) | 48 (18–84) | 0.930 |
| Sputum AFB | ||||
| Smear positive | 366 | 232 | 134 | <0.001 |
| Culture positive | 402 | 227 | 175 | <0.001 |
| Both smear and culture positive | 339 | 226 | 113 | |
| Gender | ||||
| Male (%) | 247 (57.6) | 107 (45.9) | 140 (71.4) | <0.001 |
| Female (%) | 182 (42.4) | 126 (54.1) | 56 (28.6) | |
| Main symptoms | <0.001 | |||
| Cough (%) | 195 (53.7) | 124 (62.3) | 71 (43.3) | |
| Non-cough (%) | 142 (39.1) | 62 (31.2) | 80 (48.8) | |
| Asymptomatic (%) | 26 (7.2) | 13 (6.5) | 13 (7.9) | |
| Symptom duration | ||||
| Mean (range, weeks) | 7.5 (0–52) | 8.25 (0–52) | 6.19 (0–48) | 0.083 |
| Duration | ||||
| <4 weeks (%) | 192 (44.7) | 67 (30.9) | 94 (51.9) | <0.001 |
| ≥4 weeks (%) | 237 (55.3) | 150 (69.1) | 87 (48.1) | |
| Previous history of PTB | 0.002 | |||
| Yes (%) | 77 (17.9) | 29 (12.7) | 47 (24.1) | |
| No (%) | 352 (82.1) | 199 (87.3) | 148 (75.9) | |
| Co-morbid disease | 0.003 | |||
| Absent (%) | 341 (79.5) | 198 (85.0) | 143 (73.0) | |
| Present (%) | 88 (20.5) | 35 (15.0) | 53 (27.0) | |
| Severity by CXR | ||||
| Minimal (%) | 152 (47.8) | 84 (47.7) | 68 (47.9) | 0.995 |
| Moderate advanced (%) | 116 (36.5) | 64 (36.4) | 52 (36.6) | |
| Far advanced (%) | 50 (15.7) | 28 (15.9) | 22 (15.5) | |
| CXR finding | ||||
| No cavitary disease (%) | 253 (79.6) | 138 (78.5) | 115 (81.0) | 0.614 |
| Cavitary disease (%) | 65 (20.4) | 38 (21.5) | 27 (19.0) | |
| No atelectasis (%) | 192 (74.7) | 98 (70.0) | 94 (80.3) | 0.164 |
| Atelectasis (%) | 65 (25.3) | 42 (30.0) | 23 (19.7) | |
| Initial FEV1 (% predicted) | 89.2 ± 22.3 | 88.3 ± 22.4 | 91.1 ± 21.8 | 0.226 |
PTB, pulmonary tuberculosis; EBTB, endobronchial tuberculosis; CXR, chest X-ray; FEV1, forced expiratory volume in 1 s.