Table 1.
The basic characteristics and diagnostic basis of patients in the two imaging centers
| Parameters | Institutions A (n = 432) | Institutions B (n = 61) | ||
|---|---|---|---|---|
| APTB (n = 218) | CAP (n = 214) | APTB (n = 31) | CAP (n = 30) | |
| Gender (female) | 102 (46.8) | 94 (43.9) | 9 (29.0) | 14 (46.7) |
| Age (years) | 41.5 (25, 58) | 34.5 (16, 56) | 37 (21, 55) | 51 (20.5, 65) |
| Fever/chills | 53 (24.3) | 61 (28.5) | 7 (22.6) | 6 (20.0) |
| Cough/expectoration | 103 (47.2) | 114 (53.3) | 11 (35.5) | 7 (23.3) |
| Muscle ache/chest pain | 22 (10.1) | 17 (7.9) | 3 (9.7) | 4 (13.3) |
| Pharyngalgia | 15 (6.9) | 34 (15.9) | 1 (3.2) | 5 (16.7) |
| Hemoptysis | 36 (16.5) | 3 (1.4) | 5 (16.1) | 0 (0) |
| Night sweats | 27 (12.4) | 16 (7.5) | 5 (16.1) | 3 (10.0) |
| Asymptomatic | 76 (34.9) | 59 (27.6) | 12 (38.7) | 7 (23.3) |
| Diagnostic basis | Sputum specimen (n = 103); Transthoracic needle biopsy specimen (n = 44); Bronchial flushing or alveolar lavage fluid specimens (n = 37); Transbronchial lung biopsy specimens (n = 21); Surgical specimen (n = 13) | Streptococcus pneumoniae (n = 29); Mycoplasma pneumoniae (n = 27); Chlamydia pneumonia (n = 9); Staphylococcus aureus (n = 9); Klebsiella pneumoniae (n = 7); Hemophiles influenzae (n = 6); Influenza virus (n = 13); Respiratory syncytial virus (n = 11); Parainfluenza virus (n = 9); Unknown (n = 94) | Sputum specimen (n = 10); Bronchial flushing or alveolar lavage fluid specimens (n = 9); Transthoracic needle biopsy specimen (n = 7); Transbronchial lung biopsy specimens (n = 4); Surgical specimen (n = 1) | Streptococcus pneumoniae (n = 8); Chlamydia pneumonia (n = 5); Chlamydia pneumonia (n = 1); Influenza virus (n = 9); respiratory syncytial virus (n = 2); unknown (n = 6) |
Age was expressed as median and inter-quartile range
APTB Active pulmonary tuberculosis, CAP Community-acquired pneumonia