Table 4.

Risk factors for LTBI of Lao children contacts of TB patients (univariable analyses)

	Odds Ratio	Std. Err.	p	95% CI
Patients with complaints	4.30	5.32	0.23	0.38 – 48.68
Lao Sung ethnic group *	4.24	2.18	0.00	1.54 – 11.65
Children with sputum *	3.75	2.83	0.07	0.85 – 16.44
Children below 5 years *	3.68	1.91	0.01	1.32 – 10.22
Illiterate*	3.30	2.62	0.13	0.69 – 15.69
Patients with initial sputum ++ *	2.17	0.84	0.04	1.01 – 4.66
Patient spitting on follow-up*	1.87	0.69	0.09	0.90 – 3.85
Room under 30 m3	1.06	0.60	0.91	0.34 – 3.25
Sex	1.04	0.36	0.8	0.52 – 2.09
Number of family members ≥ 7	0.92	0.32	0.81	0.46 – 1.83
Distance to health centre ≥ 1 km	0.88	0.32	0.75	0.43 – 1.83
No knowledge on transmission	0.85	0.34	0.70	0.39 – 1.88
Direct filiation to TB patient	0.76	0.26	0.43	0.38 – 1.50
TB patients with chronic cough	0.74	0.27	0.42	0.36 – 1.52
BCG scars	0.64	0.23	0.22	0.31 – 1.30
No compliance to treatment	0.60	0.26	0.24	0.25 – 1.41

* variable included in the multi-variate analysis