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Table 3 Odds ratios for the association between smoking and false negative or indeterminate result in an univariate analysis for 34 Danish and 172 Tanzanian TB patients

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
Danish TB pt 11.3, 95% CI: 1.2-287.7 p = 0.02 0.6, 95% CI: 0.05-7.6 p = 0.69
Tanzanian 3.8, 95% CI: 1.2-11.8 p = 0.02 2.9, 95% CI: 0.97-8.7 p = 0.06
  1. Odds ratios (OR) were for false negative results and indeterminate results in univariate analysis in 34 Danish and 172 Tanzanian patients.
  2. Possible predictors for a false negative and indeterminate QFT result respectively were identified by univariate analysis in 34 Danish and 172 Tanzanian patients with bacteriologically confirmed pulmonary TB (Table 3).