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Estimation of the impact on children’s health of environmental tobacco smoke in England and Wales

MRC Institute for Environment and Health, University of Leicester, 94 Regent Road, Leicester LE1 7DD, England, Ir24{at}le.ac.uk

C Courage

MRC Institute for Environment and Health, University of Leicester, 94 Regent Road, Leicester LE1 7DD, England

E Green

MRC Institute for Environment and Health, University of Leicester, 94 Regent Road, Leicester LE1 7DD, England

In this paper, the population attributable risk (PAR), a measure of the excess risk of disease associated with a risk factor, is calculated for some of the common adverse health effects that have been associated with exposure of children to environmental tobacco smoke (ETS): childhood lower respiratory illness, chronic middle ear disease, asthma and sudden infant death syndrome (SIDS). Published data on both risk estimates and the percentage of children exposed to ETS in the home (prevalence of ETS) have been utilised. The percentage of childhood lower respiratory illness and middle ear disease typically attributable to ETS from either parent smoking ranged from 9% for asthma prevalence and for referral for glue ear, to 25% for hospital admission for lower respiratory illness. Where data were available to calculate PARs separately for mother only smoking and father only smoking, the PARs were generally larger for mothers only smoking, due mainly to higher odds ratios for mothers only smoking. The PAR for SIDS attributable to ETS from mother only smoking was 11%. Although based on a small number of studies, the PAR for SIDS attributable to smoking of fathers only was similar to that attributable to the smoking of mothers only, largely due to the higher prevalence of households where only the father smokes. This study has shown that the impact of ETS on childhood illness can be considerable, emphasising the importance of the need to develop effective strategies for reducing the risk of ETS exposure in the home and elsewhere.

Key Words: Attributable risk • childhood • environmental tobacco smoke • parental smoking

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