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

	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

Odds ratios (OR) were for false negative results and indeterminate results in univariate analysis in 34 Danish and 172 Tanzanian patients.

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).