Table 1 Baseline characteristics between training and test set.
Variable | Missing, n (%) | Test set n (%) or mean ± SD (N = 2513) | Training set n (%) or mean ± SD (N = 5861) | P-value |
|---|---|---|---|---|
Sex | 0 (0.0) | 0.203 | ||
Female | 959 (38.2) | 2149 (36.7) | ||
Male | 1554 (61.8) | 3712 (63.3) | ||
Age (years) | 0 (0.0) | 67.5 ± 15.4 | 67.9 ± 15.6 | 0.274 |
Mean arterial blood pressure (mmHg) | 0 (0.0) | 91.0 ± 20.0 | 91.2 ± 20.7 | 0.626 |
Heart rate (min-1) | 68 (0.8) | 99.9 ± 21.1 | 100.9 ± 21.7 | 0.056 |
Respiratory rate (min-1) | 70 (0.8) | 19.7 ± 4.3 | 19.9 ± 4.4 | 0.094 |
Body temperature (°C) | 57 (0.7) | 37.3 ± 1.0 | 37.3 ± 1.0 | 0.336 |
Saturation (%) | 94 (1.1) | 94.8 ± 5.8 | 94.7 ± 5.6 | 0.492 |
Hypertension | 0 (0.0) | 1166 (46.4) | 2773 (47.3) | 0.457 |
Diabetes | 0 (0.0) | 726 (28.9) | 1743 (29.7) | 0.450 |
AIDS | 0 (0.0) | 3 (0.1) | 31 (0.5) | 0.012 |
Old tuberculosis | 0 (0.0) | 322 (12.8) | 788 (13.4) | 0.456 |
Alcohol history | 654 (7.8) | 1238 (53.5) | 2959 (54.7) | 0.330 |
Never smoker | 654 (7.8) | 1129 (48.8) | 2590 (47.9) | 0.494 |
Cough | 0 (0.0) | 1109 (44.1) | 2492 (42.5) | 0.180 |
Sputum | 0 (0.0) | 1055 (42.0) | 2442 (41.7) | 0.807 |
Fever | 0 (0.0) | 1366 (54.4) | 3143 (53.6) | 0.554 |
Dyspnea | 0 (0.0) | 1603 (63.8) | 3796 (64.8) | 0.405 |
Chest pain | 0 (0.0) | 458 (18.2) | 1057 (18.0) | 0.860 |
Hemoptysis | 0 (0.0) | 337 (13.4) | 827 (14.1) | 0.416 |
Anorexia | 0 (0.0) | 122 (4.9) | 265 (4.5) | 0.542 |
General weakness | 0 (0.0) | 238 (9.5) | 552 (9.4) | 0.972 |
Sweating | 0 (0.0) | 10 (0.4) | 22 (0.4) | 1.000 |
Weight loss | 0 (0.0) | 17 (0.7) | 51 (0.9) | 0.440 |
Body mass index (kg/m2) | 4485 (53.6) | 22.2 ± 3.9 | 22.2 ± 4.1 | 0.957 |
Albumin (g/dL) | 18 (0.2) | 3.3 ± 0.6 | 3.3 ± 0.6 | 0.813 |
High density lipoprotein (mg/dL) | 7566 (90.4) | 36.4 ± 13.3 | 35.3 ± 13.8 | 0.269 |
Low density lipoprotein (mg/dL) | 7729 (92.3) | 73.0 ± 35.7 | 77.7 ± 39.7 | 0.163 |
Serum sodium (mmol/L) | 11 (0.1) | 137.3 ± 4.6 | 137.4 ± 4.6 | 0.454 |
Serum potassium (mmol/L) | 10 (0.1) | 4.2 ± 0.5 | 4.2 ± 0.5 | 0.957 |
Serum chloride (mmol/L) | 12 (0.1) | 100.6 ± 5.0 | 100.8 ± 4.9 | 0.218 |
Smear microscopy | 0 (0.0) | 0.675 | ||
Negative | 2459 (97.9) | 5745 (98.0) | ||
Positive | 54 (2.1) | 116 (2.0) | ||
Polymerase chain reactiona | 6222 (74.3) | 0.506 | ||
Negative | 609 (99.2) | 1529 (99.5) | ||
Positive | 5 (0.8) | 9 (0.6) | ||
Chest radiography | 0 (0.0) | 0.763 | ||
Negative | 2500 (99.5) | 5840 (99.6) | ||
Positive | 13 (0.5) | 21 (0.4) | ||
Chest computed tomography | 980 (23.6) | 0.911 | ||
Negative | 1780 (92.6) | 4154 (92.9) | ||
Positive | 142 (7.4) | 318 (7.1) | ||
TB screening score by DLAD | 0 (0.0) | 19.8 ± 22.5 | 19.3 ± 22.4 | 0.327 |
