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Table 2 Frequency and adjusted odds ratios (OR) and 95% confidence intervals (95% CI) for covariates associated with QFT-IT results

From: Risk of latent TB infection in individuals employed in the healthcare sector in Germany: a multicentre prevalence study

Covariates

QFT-IT

Negative n/%

QFT-IT

Positive n/%

Odds Ratio

95% CI

Age **

    

> 25 years

249 (98.4)

4 (1.6)

1

 

25-35 years

449 (93.3)

32 (6.7)

3.8

1.3-11.2

35-45 years

524 (91.8)

47 (8.2)

4.4

1.6-12.5

45-55 years

440 (86.8)

67 (13.2)

7.6

2.7-21.4

> 55 years

144 (75.0)

48 (25.0)

15.1

5.3-43.4

Gender**

    

Female

1392 (89.9)

156 (10.1)

1

 

Male

414 (90.8)

42 (9.2)

1.2

0.8-1.7

Country of birth**

    

Germany

1529 (91.7)

138 (8.3)

1

 

Foreign-born

277 (82.2)

60 (17.8)

2.0

1.4-2.8

TB in own history**

    

No

1792 (90.5)

188 (9.5)

1

 

Yes

14 (58.3)

10 (41.7)

4.9

1.97-12.2

BCG vaccination

    

No

995 (90.5)

104 (9.5)

1

 

Yes

811 (89.6)

94 (10.4)

0.9

0.7-1.3

Profession

    

Physicians

254 (90.4)

27 (9.6)

1

 

Nurses

982 (90.3)

105 (9.7)

0.94

0.6-1.6

Administration staff

146 (85.4)

25 (14.6)

1.1.

0.5-2.2

Technicians and special ward staff

175 (90.2)

19 (9.8)

0.7

0.3-1.5-

Unknown

51 (86.4)

8 (9.9)

1.3

0.5-3.3

Social workers/auxiliaries

198 (93.4)

14 (6.6)

0.8

0.4-1.8

Workplace

    

Other clinic ward

653 (90.6)

68 (9.4)

1

 

Unknown

64 (92.8)

5 (7.2)

0.9

0.3-2.4

Admission ward

129 (93.5)

9 (6.5)

0.7

0.2-2.3

Infection ward

278 (91.7)

25 (8.3)

1.3

0.4-3.8

Geriatric care

272 (88.0)

37 (12.0)

1.7

0.6-4.9

Technicians

151 (85.8)

25 (14.2)

2

0.6-6.4

Administration

64 (85.3)

11 (14.7)

1.7

0.5-5.7

Intensive care/surgery room

195 (91.5)

18 (8.5)

1.1

0.9-3.3

Previous TST in medical history**

    

Negative TST

961 (94.5)

56 (5.5)

1

 

Positive TST

386 (80.4)

94 (19.6)

3.5

2.4-4.99

No TST

459 (90.5)

48 (9.5)

1.7

1.1-2.5

  1. ** The final multivariate logistics model includes the variables age, gender, TST in own history, TST history and country of birth.