|
Agreement between TST and QuantiFERON®TB Gold for different cut-off values of TST |
||||
| TST |
QFT |
TST cut-off ≥ 6 mm |
TST cut-off ≥ 10 mm |
TST cut-off ≥ 15 mm |
|
|
||||
| No. (%) |
No. (%) |
No. (%) |
||
|
|
||||
| Positive |
Positive |
232 (25) |
190 (21) |
104 (11) |
| Negative |
Negative |
420 (46) |
527 (58) |
611 (67) |
| Positive |
Negative |
228 (25) |
121 (13) |
37 (4) |
| Negative |
Positive |
32 (4) |
74 (8) |
160 (18) |
| Total agreement |
652 (72) |
717 (79) |
715 (78) |
|
| Kappa (95% CI) |
0.43 (0.37 – 0.49) |
0.51 (0.45 – 0.57) |
0.39 (0.32 – 0.47) |
|
|
Agreement between tuberculin skin test and QuantiFERON®TB Gold among 912 newly arrived asylum seekers in Norway Sept. 19. 2005 – June 12. 2006 by different cut-off values of tuberculin skin test indurations. | ||||
Winje et al. BMC Infectious Diseases 2008 8:65 doi:10.1186/1471-2334-8-65 |
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