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Table 1 Background characteristics of Danish and Tanzanian TB patients

From: Negative effect of smoking on the performance of the QuantiFERON TB gold in tube test

  Danish patients (n = 34) Tanzanian patients (n = 172)
  Non-smokers (n = 14) Smokers (n = 20) p Non-smokers (n = 149) Smokers (n = 23) p
Male sex, n (%) 8 (57) 16 (80) 0.15 89 (60) 20 (87) 0.01
Age, median (range) 29 (24–76) 50 (23–62) 0.10 32 (15–84) 32 (22–69) 0.50
Alcohol, n (%)* 0 (0) 7 (35) 0.03 27(18) 16 (70) <0.001
HIV, n (%) 1 (7) 3 (15) 0.63 71 (48) 4 (17) 0.01
  1. Demographic characteristics of Danish and Tanzanian study participants. P-values are for comparison between non-smokers and smokers (Wilcoxon signed rank test and chi-square test). *For Danish patients, alcohol is defined as daily consumption. For Tanzanian patients, alcohol is defined as simply reporting to consuming alcohol at any level.