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Table 1 Description of study population and frequencies of QFT-Plus results at baseline

From: QFT-Plus: a plus in variability? – Evaluation of new generation IGRA in serial testing of students with a migration background in Germany

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)

  1. aQFT-Plus result at baseline