Table 3 Risk of future smoking in children exposed to second hand smoke in the home

Milton et al. 2004[37]

Ever tried smoking:

Currently exposed to smokers in the home vs.

254 at aged 10

NR

<0.001

non-smokers

238 at aged 11

<0.001

Currently exposed to SHS in the home vs. not

256 at aged 10

NR

0.136 (aged 10)

exposed

236 at aged 11

0.064 (aged 11)

Tried smoking by age 11:

Exposed to smoking father at age 9

NR

OR 5.27, 95% CI 2.18 – 12.74

0.002

vs. non-smoking father

Exposed to smoking brother at age 9

NR

OR 5.32, 95% CI 1.36 – 21.18

0.017

vs. non-smoking brother

Griesbach et al. 2003[38]

Being a daily smoker by the presence of either one or both parents who smoke

Scotland

1635

OR 1.73, 95% CI 1.32-2.26

<0.001

Wales

1364

OR 1.98, 95% CI 1.46-2.70

<0.001

Being a daily smoker by the presence of other (non-parent) smoker at home

Scotland

1635

OR 2.43, 95% CI 1.84-3.22

<0.001

Wales

1364

OR 2.11, 95% CI 1.47-3.02

<0.001