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Table 2 Characteristics of active TB cases.

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

  Case 1 Case 2 Case 3 Case 4 Total*
Homeless or caregivers Homeless Homeless Homeless Homeless 4
Sex Male Male Male Male 4
Age 62 63 66 66 Mean 64.3
Current smoker - + + - 2
Current drinker - + - + 2
Length of time spent living and/or working in the Airin district, years 10 9 20 13 Mean 13.0
Past history of TB - + - - 1
Past exposure to TB patients - - - - 0
Cough and/or sputum + + + + 4
General fatigue + - + + 3
Elevated body temperature - - - - 0
Abnormal chest X-ray finding + + + + 4
QFT-positivity - + + + 3
  1. Abbreviations: TB, tuberculosis; QFT, QuantiFERON-TB Gold In-Tube
  2. *The number of positive for each factor or mean value for continuous variables among four active TB cases.