Incidence rate of latent tuberculosis infection per 100 children per year by age group and year of follow-up among the 40 children not infected at baseline and followed-up
| Newly infected | Incidence rate | 95% CI | |
| Age group (years) | |||
| <2 | 2 | 19.4 | 4.9 to 77.8 |
| 2–4 | 3 | 22.4 | 7.2 to 69.5 |
| ≤5 | 5 | 21.1 | 8.8 to 50.8 |
| >5 | 6 | 18.9 | 8.5 to 42.1 |
| Time of follow-up | |||
| First 3 months | 5 | 53.4 | 22.2 to 128.4 |
| First 6 months | 6 | 33.3 | 15.0 to 74.1 |
| First year | 8 | 24.2 | 12.1 to 48.4 |
| Second year | 3 | 13.8 | 4.4 to 42.7 |
| Overall | 11 | 19.9 | 11.0 to 35.9 |