Estimation of annual risk of tuberculous infection (ARTI) by locating a secondary peak in the distribution curves for the tuberculin response in different sexes and age groups
| Sex | Age | Location of secondary peak | |||||
|---|---|---|---|---|---|---|---|
| 15 mm | 14.5 mm | 15.5 mm | |||||
| % Prevalence(95% CI) | % ARTI(95% CI) | %Prevalence | % ARTI(95% CI) | %Prevalence | % ARTI(95% CI) | ||
| Girls | 6–7 | 3.74 (3.06 to 4.42) | 0.54 (0.44 to 0.64) | 4.32 | 0.63 (0.51 to 0.74) | 3.17 | 0.46 (0.36 to 0.56) |
| 8–9 | 4.49 (3.77 to 5.21) | 0.51 (0.43 to 0.59) | 5.33 | 0.61 (0.51 to 0.71) | 3.64 | 0.41 (0.33 to 0.49) | |
| 6–9 | 4.12 (3.62 to 4.62) | 0.52 (0.46 to 0.59) | 4.83 | 0.62 (0.54 to 0.69) | 3.41 | 0.43 (0.37 to 0.49) | |
| Boys | 6–7 | 2.52 (1.95 to 3.09) | 0.36 (0.28 to 0.45) | 3.07 | 0.44 (0.34 to 0.54) | 1.97 | 0.28 (0.20 to 0.36) |
| 8–9 | 4.23 (3.51 to 4.95) | 0.48 (0.40 to 0.56) | 4.93 | 0.56 (0.46 to 0.66) | 3.53 | 0.40 (0.32 to 0.48) | |
| 6–9 | 3.41 (2.95 to 3.87) | 0.43 (0.37 to 0.49) | 4.04 | 0.51 (0.44 to 0.58) | 2.78 | 0.35 (0.29 to 0.41) | |
| Overall | 6–7 | 3.08 (2.64 to 3.52) | 0.44 (0.38 to 0.51) | 3.72 | 0.54 (0.46 to 0.61) | 2.45 | 0.35 (0.31 to 0.44) |
| 8–9 | 4.36 (3.85 to 4.87) | 0.50 (0.44 to 0.55) | 5.14 | 0.59 (0.52 to 0.65) | 3.59 | 0.41 (0.35 to 0.46) | |
| 6–9 | 3.77 (3.43 to 4.11) | 0.48 (0.43 to 0.52) | 4.45 | 0.56 (0.51 to 0.62) | 3.10 | 0.39 (0.35 to 0.43) | |