The European Journal of Public Health Advance Access originally published online on August 10, 2005
The European Journal of Public Health 2005 15(6):613-614; doi:10.1093/eurpub/cki052
Smoking |
Periconceptional smoking and male : female ratio of newborns
Fabio Parazzini1,2, Liliane Chatenoud1, Cristina Maffioletti2, Francesca Chiaffarino1 and Donatella Caserta3
1 Istituto di Ricerche Farmacologiche Mario Negri, Milano, Italy
2 Prima Clinica Ostetrico Ginecologica, Università di Milano, Milano, Italy
3 Clinica Ostetrico Ginecologica, Università dell'Aquila, Aquila, Italy
Correspondence: Fabio Parazzini, Istituto di Ricerche Farmacologiche Mario Negri, Via Eritrea 62, 20157 Milano, Italy, tel: +39 02 390141, fax: +39 02 33200231, e-mail: parazzini{at}marionegri.it
We have analysed data collected on 1962 women who gave birth at 37 or more weeks of gestation to health infants (excluding those with a low birth weight and twins). In comparison with non-smoking parents, the odds ratio (OR) of being male was lower than unity for offsprings of both smoking parents, but no clear relationship however emerged between the risk of giving birth to a male, and the number of cigarettes smoked per day.
Keywords: smoking, male : female ratio, preconceptional
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