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. 1988 Dec;58(6):825–831. doi: 10.1038/bjc.1988.319

Lung cancer and passive smoking: predicted effects from a mathematical model for cigarette smoking and lung cancer.

S C Darby 1, M C Pike 1
PMCID: PMC2246877  PMID: 3224084

Abstract

Epidemiological studies of active smokers have shown that the duration of smoking has a much greater effect on lung cancer risk than the amount smoked. This observation suggests that passive smoking might be much more harmful than would be predicted from measures of the level of exposure alone, as it is often of very long duration frequently beginning in early childhood. In this paper we have investigated this using a multistage model with five stages. The model is shown to provide an excellent fit to data on the incidence of lung cancer among smokers, ex-smokers and non-smokers in a cohort of male British doctors. Contrary to our expectation the model predicted only a slight increase in relative risk with increasing duration of passive exposure. Allowing for exposures early in life does not therefore explain the discrepancy between the relative risk of about 1.5 calculated from epidemiological studies of lung cancer and the low levels of exposure indicated by cotinine measurements in those passively exposed.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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