Table 1.
Description of study population and frequencies of QFT-Plus results at baseline
| Variable | QFT-Plus positivea | QFT-Plus negativea | |
|---|---|---|---|
| N (Col-%) | N (Row-%) | N (Row-%) | |
| Gender | |||
| Female | 22 (53.7) | 3 (13.6) | 19 (86.4) |
| Male | 19 (46.3) | 6 (31.6) | 13 (68.4) |
| Age | |||
| 20–25 years | 26 (63.4) | 3 (11.5) | 23 (88.5) |
| 26–36 years | 15 (36.6) | 6 (40.0) | 9 (60.0) |
| Country of birth Classified by TB-incidence | |||
| < 125:100 000 | 19 (46.3) | 1 (5.3) | 18 (94.7) |
| ≥ 125:100 000 | 22 (53.7) | 8 (36.4) | 14 (63.6) |
| Classified by WHO-regions | |||
| Africa | 9 (22.0) | 4 (44.4) | 5 (55.6) |
| The Americas | 6 (14.6) | 0 (0.0) | 6 (100.0) |
| South-East Asia | 9 (22.0) | 2 (22.2) | 7 (77.8) |
| Europe | 10 (24.4) | 0 (0.0) | 10 (100.0) |
| Eastern Mediterranean | 2 (4.9) | 0 (0.0) | 2 (100.0) |
| Western Pacific | 5 (12.2) | 3 (60.0) | 2 (40.0) |
| Time living in Germany | |||
| < 2 years | 15 (36.6) | 3 (20.0) | 12 (80.0) |
| 2–10 years | 25 (61.0) | 6 (24.0) | 19 (76.0) |
| > 10 years | 1 (2.4) | 0 (0.0) | 1 (100.0) |
| Contact to TB | |||
| Yes | 19 (46.3) | 6 (31.6) | 13 (68.4) |
| No | 22 (53.7) | 3 (13.6) | 19 (86.4) |
| Type of TB contact | |||
| Relatives | 8 (19.5) | 5 (62.5) | 3 (37.5) |
| Friends/acquaintances | 3 (7.3) | 0 (0.0) | 3 (100.0) |
| Professional | 6 (14.6) | 0 (0.0) | 6 (100.0) |
| Other type | 2 (4.9) | 1 (50.0) | 1 (50.0) |
| TB in own history | |||
| Yes | 1 (2.4) | 1 (100.0) | 0 (0.0) |
| No | 40 (97.6) | 8 (20.0) | 32 (80.0) |
| BCG-vaccination | |||
| Yes | 18 (43.9) | 2 (11.1) | 16 (88.9) |
| No | 4 (9.8) | 3 (75.0) | 1 (25.0) |
| unknown | 19 (46.3) | 4 (21.1) | 15 (78.9) |
| Previous TST | |||
| Positive | 3 (7.3) | 2 (66.7) | 1 (33.3) |
| Negative | 5 (12.2) | 0 (0.0) | 5 (100.0) |
| Unknown | 3 (7.3) | 0 (0.0) | 3 (100.0) |
| No TST | 30 (73.2) | 7 (23.3) | 23 (76.7) |
aQFT-Plus result at baseline