Table 3 Association between potential confounding variables and second dose BCG in neighbourhood and HU controls.

Sex

   Male

1

1

   Female

1.17

0.81–1.68

0.82

0.57–1.19

Contact with TB

   Yes

1.18

0.67–2.08

1.12

0.65–1.91

   No

1

1

Head of family employed

   Yes

1.40

0.95–2.06

1.21

0.71–1.89

   No

1

1

Income of the head of family

   <1 MW*

1

1

   1 to <2MW

1.82

0.81–4.10

0.97

0.41–2.28

   2 to <5MW

1.62

0.59–4.56

1.05

0.39–2.82

   ≥ 5MW

0.94

0.25–3.52

0.63

0.22–1.83

   Not reported or not known

1.03

0.50–2.11

1.01

0.46–2.22

Piped water

   Yes

1.66

0.37–7.50

0.60

0.30–1.22

   No

1

1

Washing machine

   Yes

1.02

0.63–1.66

1.24

0.81–1.90

   No

1

1

Frigidaire

   Yes

1.57

0.80–3.06

0.76

0.38–1.51

   No

1

1

Videocassette

   Yes

1.42

1.01–2.19

0.91

0.63–1.30

   No

1

1