. 2014 May 30;9(5):e97992. doi: 10.1371/journal.pone.0097992

Table 3. Bivariate analysis and Multivariate logistic regression for TST results and QFT results.

	TST results					QFT results
	Bivariate			Multivariate		Bivariate			Multivariate
	Positive^#	Negative^#	P value	P value	Odds Ratio	Positive^#	Negative^#	P value	P value	Odds Ratio
	N = 39	N = 77			(95% CI)	N = 36	N = 80			(95% CI)
Age (months)	45.0	46.0	0.863	0.729	-	47.5	44.0	0.241	0.412	-
	(26.0, 60.0)	(24.0, 65.0)				(32.0, 66.5)	(23.0, 62.0)
Gender (male)	46.2%	40.3%	0.544	0.906	-	41.7%	43.2%	0.876	0.665	-
BCG scar	94.9%	90.5%	0.418	0.244	-	97.2%	89.7%	0.169	0.560	-
Time of exposure (months)	4.0	1.0	<0.001	0.009	1.15^b	2.0	1.0	0.024	0.537	-
	(1.0, 10.0)	(0.0, 3.0)			(1.04; 1.27)	(1.0–5.2)	(0.0–3.0)
MTC-score	12.0	10	<0.001	0.005	1.29^b	12.0	10.0	0.021	0.035	1.16^b
	(8.2, 14.0)	(0.0,12,0)			(1.08; 1.54)	(8.0, 14.0)	(0.0, 12.0)			(1.01; 1.33)
Passive Smokers	50.0%	27.4%	0.017	0.323	-	41.7%	32.9%	0.365	0.728	-
Previous infection^a	15.4%	26.0%	0.196	0.203	-	16.7%	24.7%	0.335	0.836	-
Previous vaccination^a	59.0%	49.4%	0.327	0.078	-	55.6%	50.6%	0.622	0.631	-
Previous corticoid therapy^a	15.4%	6.5%	0.123	0.199	-	11.1%	8.6%	0.673	0.801	-
Helminth infection	42.9%	25.0%	0.091	0.252	-	21.4%	36.1%	0.167	0.324	-
Z scores for weight-for-age and gender	−0.1	−0.3	0.800	0.990	-	−0.3	−0.1	0.317	0.858	-
	(−1.0, 0.3)	(−0.9, 0.5)				(−1.0, 0.3)	(−0.9, 0.5)
Ferritin level (ng/mL)	35.2%	30.6	0.243	0.767	-	29.9	35.4	0.323	0.705	-
	(26.4, 48.4)	(20.8, 44.7)				(22.3, 40.8)	(21.6, 49.9)
Vitamin D level (ng/mL)	40	35.5	0.097	0.963	-	37.7	35.7	0.736	0.227	-
	(26.8, 59.8)	(23.8, 46.3)				(26.0, 49.1)	(24.4, 48.9)

TST: Tuberculin Skin Test, QFT: QuantiFERON-TB Gold In-Tube, MTC-score: Mycobacterium tuberculosis contact score, BCG: Bacillus Calmette-Guérin.

Categorical variables expressed as percentage (%) and quantitative variables expressed as mean and interquartile range (IQR).

In the 12 weeks prior to the study.

Linear odds ratio.