TABLE 3.
Test agreement between QFT-GIT and QFT-Plus results
| Categorya | Total no. | No. (%) with QFT-GIT/QFT-Plusb results of: |
|||
|---|---|---|---|---|---|
| +/+ | −/− | +/− | −/+ | ||
| Allc | 506 | 94 (19) | 380 (75) | 7 (1) | 25 (5) |
| Non-U.S. bornd | 434 | 88 (20) | 316 (73) | 7 (2) | 23 (5) |
| Class B1 immigrant | 49 | 19 (39) | 25 (51) | 0 (0) | 5 (10) |
| U.S. borne | 71 | 6 (8) | 63 (89) | 0 (0) | 2 (3) |
| Close contact | 48 | 3 (6) | 44 (92) | 0 (0) | 1 (2) |
a
Class B1 immigrant, immigrant with abnormal chest radiograph but negative sputum smears and cultures in overseas examinations; close contact, ≥8 h/week exposure to TB case.
b
QFT-GIT, QuantiFERON-TB Gold In-Tube; QFT-Plus, QuantiFERON-TB Gold Plus.
c
Two indeterminate QFT plus results excluded.
d
Includes 49 class B1 immigrants and 31 close contacts.
e
Includes close contacts.