| Self-reported current smoking | All | Current smoker | Ever-smoker | Recent quitter# | |
| Cotinine | Self-report | Self-report | |||
| No LTBI/TB | |||||
| n | 22 | 15 | 14 | 18 | 2 |
| % (95% CI) | 5 (3–8) | 68 (47–85) | 64 (42–82) | 82 (62–94) | 9 (2–27) |
| LTBI | |||||
| n | 86 | 55 | 52 | 65 | 2 |
| % (95% CI) | 20 (17–24) | 64 (53–74) | 60 (50–70) | 76 (66–84) | 2 (0–8) |
| Inactive TB | |||||
| n | 16 | 7 | 5 | 8 | 1 |
| % (95% CI) | 4 (2–6) | 44 (22–68) | 31 (12–56) | 50 (27–73) | 6 (0–27) |
| TB | |||||
| n | 286 | 144 | 160 | 206 | 14 |
| % (95% CI) | 67 (63–72) | 50 (45–56) | 56 (50–62) | 72 (67–77) | 5 (3–8) |
| Unable to classify | |||||
| n | 14 | 7 | 9 | 9 | 0 |
| % (95% CI) | 3 (2–5) | 50 (25–75) | 64 (38–86) | 64 (38–86) | 0 (0–19) |
| Total | |||||
| n | 424 | 228 | 240 | 306 | 19 |
| % (95% CI) | 100 | 54 (49–58) | 57 (52–61) | 72 (68–76) | 4 (3–7) |
LTBI: latent TB infection. #: ex-smokers who quit in the 12 months preceding admission to the cohort.