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Table 1 Characteristics of the study population: Spanish and foreign-born participants

From: Latent tuberculosis infection, tuberculin skin test and vitamin D status in contacts of tuberculosis patients: a cross-sectional and case-control study

Variables

Spanish n = 119 (%)

Foreign-born n = 83 (%)

Age (Mean ± SD)

39.9 ± 14.3

32.9 ± 19.9

Male (%)

66 (55.5)

46 (55.4)

25 (OH)Vitamin D3 ng/ml (Mean ± SD)

23.8 ± 13.8

23.68 ± 12.9

Vitamin 25 (OH)D3 ng/ml (Mean ± SD) Oct-March period

19.5 ± 7.8

16.58 ± 7.41

Vitamin 25 (OH)D3 ng/ml (Mean ± SD) Apr-Sept period

25.7 ± 15.5

28.86 ± 13.6

25 (OH)VitaminD3 levels

  

0-19 ng/ml

55 (46.2)

34(41.0)

20-29 ng/ml

38 (31.9)

34 (41.0)

≥ 30 ng/ml

26 (21.8)

15 (18.0)

Exposure to TB patient

  

High

35 (29.4)

29(34.9)

Medium

51 (42.9)

44 (53.0)

Low

33 (27.7)

10 (12.1)

High exposure and sputum AFB-positive index cases

19 (15.9)

21 (25.3)

BCG vaccination

36 (30.3)

62 (74.7)

   Tuberculosis types

  

   Pulmonary TB sputum positive AFB smear

81(68.1)

74 (89.9)

   Pulmonary TB sputum positive culture M. tuberculosis

28 (23.5)

3 (3.6)

   Pleurisy

7 (5.9)

2 (2.4)

   Lymph node

3 (2.5)

4 (4.8)

Foreign-born population

  

   Eastern Europe

 

41 (49.4)

   Maghreb

 

13 (15.7)

   Latin America

 

29 (34.9)

  1. SD = Standard deviation. BCG = bacilli Calmette-Guerin. AFB = Acid Fast Bacilli. TB = Tuberculosis