Children n | Dual test positive n (%) | Annual risk (95% CI) | Test for homogeneity | |
All | 1746 | 146 (8.4) | 0.80% (0.67–0.92) | |
Sex | p = 0.89 | |||
Females | 883 | 73 (8.3) | 0.79% (0.61–0.97) | |
Males | 863 | 73 (8.5) | 0.80% (0.62–0.99) | |
Age¶ | p = 0.85 | |||
<11 yrs (i.e. 6–10 yrs) | 758 | 49 (6.5) | 0.81% (0.59–1.04) | |
≥11 yrs (i.e. 11–16 yrs) | 988 | 97 (9.8) | 0.79% (0.63–0.94) | |
Ethnicity | p<0.001 | |||
Inuit | 1545 | 142 (9.2) | 0.87% (0.73–1.02) | |
Caucasian or mixed ethnicity§ | 201 | 4 (2.0) | 0.02% (0.00–0.37) | |
BCG vaccinationƒ | 1044 | p = 0.84 | ||
Yes | 336 | 27 (8.0) | 0.89% (0.55–1.22) | |
No | 708 | 67 (9.5) | 0.85% (0.64–1.00) |
#: comprises children between 6–16 yrs of age with a dual tuberculin skin test/QuntiFERON®-TB Gold test result. Children <6 and >16 yrs of age are excluded from the analyses due to scares number of children in the two groups. ¶: the age dichotomy is created based on the mean age of the participants which was 11.4 yrs. §: mixed ethnicity refers to children with both an Inuit and a Caucasian parent. ƒ: the total number of BCG vaccinated between 6–16 yrs of age identified through protocol registration.