doi: 10.1016/S0140-6736(02)08362-9.
Parental periconceptional smoking and male: female ratio of newborn infants
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- PMID: 11978342
- DOI: 10.1016/S0140-6736(02)08362-9
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Parental periconceptional smoking and male: female ratio of newborn infants
Lancet.
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Abstract
We assessed whether the smoking habits of parents around the time of conception affects the likelihood of the offspring being male or female. We found that the offspring sex ratio (male to female) was lower when either one or both of the parents smoked more than 20 cigarettes per day compared with couples in which neither of the parents smoked. We found the lowest sex ratio among children whose mothers and fathers both smoked more than 20 cigarettes per day (p<0.0001). Parental periconceptional smoking might be a contributing factor to a lower male to female sex ratio of offspring.
Comment in
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Periconceptual parental smoking and sex ratio of offspring.Lancet. 2002 Nov 9;360(9344):1514-5; author reply 1515-6. doi: 10.1016/S0140-6736(02)11454-1. Lancet. 2002. PMID: 12433553 No abstract available.
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Periconceptual parental smoking and sex ratio of offspring.Lancet. 2002 Nov 9;360(9344):1515; author reply 1515-6. doi: 10.1016/S0140-6736(02)11468-1. Lancet. 2002. PMID: 12433554 No abstract available.
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Periconceptual parental smoking and sex ratio of offspring.Lancet. 2002 Nov 9;360(9344):1515; author reply 1515-6. doi: 10.1016/S0140-6736(02)11456-5. Lancet. 2002. PMID: 12433555 No abstract available.
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Periconceptional smoking and the male to female ratio in the offspring--re-assessment of a recently proposed hypothesis.Int J Epidemiol. 2003 Jun;32(3):470-1; author reply 471. doi: 10.1093/ije/dyg089. Int J Epidemiol. 2003. PMID: 12777439 No abstract available.
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