Odds of having a positive TST response of 5 mm, 10 mm and 15 mm between IGRA negative children who had been vaccinated with BCG at birth versus children who had not been vaccinated with BCG
| 5 mm | 10 mm | 15 mm | ||||
|---|---|---|---|---|---|---|
| Age (years) | OR (95% CI) | p Value | OR (95% CI) | p Value | OR (95% CI)* | p Value |
| All children | 5.80 (2.58 to 13.0) | <0.001 | 4.03 (1.73 to 9.39) | <0.001 | 3.04 (1.14 to 8.10) | 0.02 |
| 0 to <2 | 16.2 (1.69 to 155) | 0.001 | 8.31 (0.94 to 73.5) | 0.02 | − | 0.05 |
| 2 to <5 | 9.85 (1.11 to 87.7) | 0.01 | 7.43 (0.85 to 65.1) | 0.03 | 6.00 (0.69 to 52.4) | 0.06 |
| 5 to <10 | 3.05 (0.93 to 10.0) | 0.05 | 2.71 (0.72 to 10.3) | 0.13 | 1.92 (0.39 to 9.52) | 0.41 |
| 10 to <15 | 4.16 (0.77 to 22.3) | 0.07 | 2.10 (0.39 to 11.2) | 0.38 | 0.90 (0.15 to 5.32) | 0.91 |
*Unable to calculate ORs where a zero exists in one of the four cells needed to generate the OR. No BCG-unvaccinated children under 2 years with negative IGRA results had a TST induration of greater than 15 mm. IGRA, interferon γ release assay; TST, tuberculin skin test.