Positive skin tests using different antigens and a cut off point of > 5 mm or > 15 mm
| RR | 95% CI | p value | |
|---|---|---|---|
| Cut off > 5 mm | |||
| 2 TU | 3.02 | 2.77 to 3.30 | 0.0001 |
| 5 TU, > 6 years | 4.71 | 1.62 to 13.71 | 0.0045 |
| 5TU, 2–> 6 years | 4.39 | 1.34 to 14.39 | 0.0145 |
| Cut off > 15 mm | |||
| 2 TU | 3.18 | 0.64 to 15.61 | NS |
| 5 TU | 2.73 | 0.64 to 11.70 | NS |