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Lookup NU author(s): Dr Richard McNallyORCiD, Emeritus Professor Alan Craft
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There are strong a priori reasons for considering parental smoking behaviour as a risk factor for childhood cancer but case – control studies have found relative risks of mostly only just above one. To investigate this further, self-reported smoking habits in parents of 3838 children with cancer and 7629 control children included in the United Kingdom Childhood Cancer Study (UKCCS) were analysed. Separate analyses were performed for four major groups (leukaemia, lymphoma, central nervous system tumours and other solid tumours) and more detailed diagnostic subgroups by logistic regression. In the four major groups, after adjustment for parental age and deprivation there were nonsignificant trends of increasing risk with number of cigarettes smoked for paternal preconception smoking and nonsignificant trends of decreasing risk for maternal preconception smoking (all P-values for trend >0.05). Among the diagnostic subgroups, a statistically significant increased risk of developing hepatoblastoma was found in children whose mothers smoked preconceptionally (OR=2.68, P=0.02) and strongest (relative to neither parent smoking) for both parents smoking (OR=4.74, P=0.003). This could be a chance result arising from multiple subgroup analysis. Statistically significant negative trends were found for maternal smoking during pregnancy for all diagnoses together (P<0.001) and for most individual groups, but there was evidence of under-reporting of smoking by case mothers. In conclusion, the UKCCS does not provide significant evidence that parental smoking is a risk factor for any of the major groups of childhood cancers.
Author(s): Pang D, McNally RJQ, Birch JM, On behalf of the UK Childhood Cancer Study Investigators
Publication type: Article
Publication status: Published
Journal: British Journal of Cancer
Year: 2003
Volume: 88
Issue: 3
Pages: 373-381
ISSN (print): 0007-0920
ISSN (electronic): 1532-1827
Publisher: Nature Publishing Group
URL: http://dx.doi.org/10.1038/sj.bjc.6600774
DOI: 10.1038/sj.bjc.6600774
PubMed id: 12569379
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