Table 3 Concordance between the two IGRAs at each study visit
Visit No. | No. of valid results | Pos. QFT-Plus n (%) | Pos. QFT-GIT n (%) | Discordant results n (%) | Agreement between IGRAs |
|---|---|---|---|---|---|
1 | 41 | 9 (22.0) | 10 (24.4) | 3 (7.3) | 92.7% |
2 | 41 | 9 (22.0) | 10 (24.4) | 3 (7.3) | 92.7% |
3 | 40 | 11 (27.5) | 11 (27.5) | 2 (5.0) | 95.0% |
4 | 41 | 11 (26.8) | 11 (26.8) | 0 (0.0) | 100% |
Total | 163 | 40 (24.5) | 42 (25.8) | 8 (4.9) | 95.1% (κ = 0.89) |