Geographical location and skin test results with 5 TU PPD
| Location | BCG (+) > 10mm/total (%) | BCG (–) > 10mm/total (%) | RR | 95% CI | p value |
|---|---|---|---|---|---|
| America, Canada, Queensland, South Queensland, Spain (n=12) | 3636/15962 (22.8%) | 2193/10886 (20.15%) | 1.13 | 1.07 to 1.18 | <0.001 |
| Philippines, Saudi Arabia, Solomon Island, South America, Turkey, United Arab Emirates (n=8) | 3024/10507 (28.8%) | 2195/8448 (26.0%) | 1.11 | 1.06 to 1.16 | <0.001 |