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Table 4 Odds ratios for indeterminate or false negative result by multivariate logistic regression analysis for 172 Tanzanian patients only

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

  False negative QFT Indeterminate QFT
  OR (95% CI) p OR (95% CI) p
Sex (male) 0.99 (0.34-2.90) 0.99 2.56 (0.88-7.51) 0.09
Age 0.99 (0.95-1.03) 0.60 0.98 (0.95-1.02) 0.37
HIV 2.11 (0.73-6.14) 0.17 4.34 (1.59-11.85) 0.0041
Smoking 17.14 (2.96-99.11) 0.0015 5.13 (1.24-21.25) 0.02
Alcohol consumption 0.12 (0.02-0.77) 0.03 0.60 (0.18-1.97) 0.40
  1. Possible predictorsfor a false negative and indeterminate QFT result respectively were identified by multivariate analysis in 172 patients with bacteriologically confirmed pulmonary TB from Tanzania in a model including sex, HIV, smoking and alcohol consumption.
  2. QFT: QuantiFERON-TB Gold In tube test. OR: Odds ratio. CI: Confidence interval.