Demographic characteristics of study populations
| Cohort | Study part | Group | Cases (N) | Age (years) (mean±SD) | Gender (males/females), N | Positive sputum smears, N% | Positive sputum cultures, N% |
| I | Biomarker screening | HC | 40 | 37.66±13.38 | 18/22 | ND | ND |
| TB | 40 | 32.36±15.31 | 24/16 | 38 (55.26) | 25 (84) | ||
| PN | 40 | 37.80±11.59 | 16/24 | 18 (0) | 12 (0) | ||
| LTBI | 40 | 37.68±11.56 | 27/13 | ND | ND | ||
| II | Model establishment and test | HC | 84 | 39.90±10.82 | 44/40 | ND | ND |
| TB | 116 | 34.99±12.74 | 66/50 | 62 (65.23) | 62 (33.33) | ||
| PN | 84 | 39.98±13.47 | 33/51 | 84 (0) | 84 (0) | ||
| LTBI | 84 | 36.36±11.59 | 50/34 | ND | ND | ||
| III | Prediction | HC | 19 | 35.95±10.56 | 9/10 | ND | ND |
| TB | 32 | 39.94±14.94 | 21/11 | 16(50) | 13 (40.63) | ||
| PN | 24 | 43.21±12.96 | 15/9 | 24 (0) | 24 (0) | ||
| LTBI | 27 | 40±16.07 | 16/11 | ND | ND |
HC, healthy control; LTBI, latent tuberculosis infection; PN, pneumonia.