Table 4 Risk factors for LTBI of Lao children contacts of TB patients (univariable analyses)

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