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Correlation between ESAT-6-, PPD-, and CFP7-induced IFN-γ responses and TST results in household contacts
| Antigen | Median no. of spots/106 cells for individuals with the following TST result: |
P valueb | ||
|---|---|---|---|---|
| <5 mm (na = 34) | 5-14 mm (n = 40) | >14 mm (n = 75) | ||
| ESAT-6 | 17.5 | 37.5 | 115 | 0.000006 |
| PPD | 92.5 | 130 | 175 | 0.0034 |
| CFP7 | 22.5 | 45 | 135 | 0.00012 |
n, number of subjects.
Kruskal-Wallis test.
