Table 4.
Agreement between TST (at two cut-offs) and QFT-GIT assay results stratified by BCG scar status
| Status of BCG scar | TST (mm) | QFT-GIT Pos | QFT-GIT Neg | Kappa | p value |
|---|---|---|---|---|---|
| BCG scar present |
≥10 |
21 |
5 |
0.71 |
0.000 |
| |
<10 |
2 |
20 |
|
|
| BCG scar absent |
≥10 |
23 |
1 |
0.93 |
0.000 |
| |
<10 |
1 |
34 |
|
|
| Total |
≥10 |
44 |
6 |
0.83 |
0.000 |
| |
<10 |
3 |
54 |
|
|
| BCG scar present |
>5 |
22 |
7 |
0.67 |
0.000 |
| |
<5 |
1 |
18 |
|
|
| BCG scar absent |
>5 |
24 |
1 |
0.97 |
0.000 |
| |
<5 |
0 |
34 |
|
|
| Total |
>5 |
46 |
8 |
0.83 |
0.000 |
| <5 | 1 | 52 |
TST: Tuberculin Skin Test; QFT-GIT: QuantiFERON®-TB Gold In-Tube; Pos: Positive; Neg: Negative.