TABLE 3.
Distribution of concordant and discordant results for TST and the QFT-GIT test
| Parameter | No. of subjects | % of subjects with TST/QFT-GIT results that werea:
|
Concordant vs discordant P value | |||
|---|---|---|---|---|---|---|
| Concordant
|
Discordant
|
|||||
| Neg/Neg | Pos/Pos | Pos/Neg | Neg/Pos | |||
| Gender | ||||||
| Male | 607 | 79.4 | 2.6 | 17.6 | 0.3 | 0.535 |
| Female | 66 | 77.3 | 4.5 | 18.2 | 0.0 | |
| TB incidence in birth country cases | ||||||
| <10 | 660 | 79.7 | 2.6 | 17.4 | 0.3 | 0.297 |
| 10-49 | 2 | 100.0 | 0.0 | 0.0 | 0.0 | |
| 50-99 | 4 | 50.0 | 0.0 | 50.0 | 0.0 | |
| 100-199 | 5 | 40.0 | 20.0 | 40.0 | 0.0 | |
| ≥200 | 5 | 60.0 | 20.0 | 20.0 | 0.0 | |
| Have visited tropics | ||||||
| No | 531 | 80.0 | 2.4 | 17.1 | 0.4 | 0.363 |
| Yes | 141 | 76.6 | 4.3 | 19.1 | 0.0 | |
| Contact with TB-infected individuals | ||||||
| No | 648 | 79.8 | 2.5 | 17.4 | 0.3 | 0.226 |
| Yes | 28 | 64.3 | 10.7 | 25.0 | 0.0 | |
| Treated for TB or LTBI | ||||||
| No | 669 | 79.2 | 2.5 | 17.9 | 0.3 | 0.247 |
| Yes | 7 | 71.4 | 28.6 | 0.0 | 0.0 | |
| History of positive TST result | ||||||
| No | 645 | 81.9 | 1.9 | 16.1 | 0.3 | 0.000 |
| Yes | 27 | 25.9 | 22.2 | 51.9 | 0.0 | |
| Went on mission | ||||||
| No | 18 | 38.9 | 11.1 | 50.0 | 0.0 | 0.000 |
| Yes | 498 | 77.1 | 2.6 | 19.9 | 0.4 | |
| Recruits | 145 | 93.8 | 2.8 | 3.4 | 0.0 | |
| Location of mission | ||||||
| Bosnia | 36 | 44.4 | 5.6 | 50.0 | 0.0 | 0.000 |
| Kyrgystan | 21 | 76.2 | 0.0 | 23.8 | 0.0 | |
| Iraq | 165 | 83.6 | 2.4 | 12.7 | 1.2 | |
| Afghanistan | 269 | 77.7 | 2.6 | 19.7 | 0.0 | |
| Duration mission (mo) | ||||||
| 0-4 | 308 | 81.2 | 2.3 | 16.2 | 0.0 | 0.032 |
| 4-6 | 176 | 72.2 | 2.3 | 25.0 | 0.6 | |
| >6 | 16 | 56.3 | 12.5 | 31.3 | 0.0 | |
Neg, negative; Pos, positive.