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Table 1 Basic characteristics and TB-related findings of the study participants.

From: Tuberculosis infection among homeless persons and caregivers in a high-tuberculosis-prevalence area in Japan: a cross-sectional study

  

Homeless persons (n = 263)

Caregivers (n = 173)

Basic characteristics

   

   Sex, female

n (%)

2 (0.8)

94 (54.3)

   Age, years

mean median (range)

58.0 59 (30-74)

48.2 48 (30-71)

30-49

n (%)

40 (15.2)

97 (56.1)

50-59

n (%)

108 (41.1)

52 (30.1)

60-74

n (%)

115 (43.7)

24 (13.9)

   Current smoker

n (%)

189 (73.0)

63 (37.1)

   Current drinker

n (%)

134 (51.9)

54 (32.0)

   Length of time spent living and/or working in the Airin district, years

mean median (range)

13.5 10 (0.1-58)

10.3 5 (0.1-64)

<5 years

n (%)

63 (25.9)

73 (43.2)

5-10 years

n (%)

46 (18.9)

33 (19.5)

≥10 years

n (%)

134 (55.1)

63 (37.3)

TB-related findings

   

   Past history of TB

n (%)

33 (12.6)

6 (3.5)

   Past exposure to TB patients

n (%)

50 (19.8)

32 (18.7)

   Cough and/or sputum

n (%)

64 (24.6)

6 (3.5)

   General fatigue

n (%)

51 (19.6)

9 (5.2)

   Elevated body temperature

n (%)

9 (3.5)

1 (0.6)

   Abnormal chest X-ray finding

n (%)

68 (25.9)

7 (4.1)

   Active TB case

n (%)

4 (1.5)

0 (0.0)

   Positive QFT result

n (%)

133 (50.6)

42 (24.3)

   Indeterminate QFT result

n (%)

4 (1.5)

1 (0.6)

  1. Abbreviations: TB, tuberculosis; QFT, QuantiFERON-TB Gold In-Tube
  2. The number of missing values was 20 for length of time spent in the Airin district, 10 for past exposure to TB patients, 4 for smoking, 5 for drinking and 3 for cough and/or sputum, general fatigue and elevated body temperature among homeless persons, and 4 for length of time spent in the Airin district, 2 for past exposure to TB patients, 3 for smoking and 4 for drinking among caregivers.
  3. None of the participants had a history of extra-pulmonary TB or used immunosuppressive agents.