Estimation of annual risk of tuberculous infection (ARTI) by the differences in tuberculin positive rates and mean age between two cohorts of different ages for both sexes
| Sex | Tuberculin positive rates (cut-off ⩾10 mm), % | Age difference(years) | ARTI(95% CI), % | ||
|---|---|---|---|---|---|
| Age 6–7 | Age 8–9 | Difference(95% CI) | |||
| Girls | 12.89 | 16.08 | 3.19 (1.85 to 4.52) | 1.95 | 1.90 (1.09 to 2.70) |
| Boys | 9.14 | 12.39 | 3.25 (2.04 to 4.46) | 1.96 | 1.84 (1.15 to 2.54) |
| Overall | 11.08 | 14.26 | 3.18 (2.27 to 4.09) | 1.96 | 1.84 (1.31 to 2.37) |