Estimation of annual risk of tuberculous infection (ARTI) by differences in the estimated prevalence of infection and mean age between two cohorts of different ages
| Secondary peak(mm) | % prevalence of infection | Difference in age(years) | % ARTI(95% CI) | ||
|---|---|---|---|---|---|
| Age 6–7 | Age 8–9 | Difference(95% CI) | |||
| 15 | 3.08 | 4.36 | 1.28 (0.56 to 2.00) | 1.96 | 0.68 (0.30 to 1.06) |
| 14.5 | 3.72 | 5.14 | 1.42 (0.62 to 2.22) | 1.96 | 0.76 (0.33 to 1.18) |
| 15.5 | 2.59 | 3.59 | 1.00 (0.33 to 1.67) | 1.96 | 0.52 (0.17 to 0.88) |