The Frequency of Twin Births in France. The Triple Influence of Biology, Medicine and Family Behaviour
The proportion of twin births stood at 15 per 1,000 in France in the early eighteenth century and returned to this level in 2000 after falling substantially in the intervening period. It has risen by 70% since the early 1970s under the dual influence of infertility treatments, which explain two-thirds of the rise, and increased age of childbearing, which accounts for the other third. After analysing the variations in twinning rate in France over time, the article examines the various contributing factors and focuses on two in particular: voluntary birth control and selection by fecundity. Women who have produced twins less frequently undertake additional pregnancies than women who have had a single birth. The consequences of a twin pregnancy on the probability of additional childbearing are measured by analysing the histories of almost one million French women recorded in successive family surveys. Lastly, the article examines the twinning peak recorded in France during the First World War and just afterwards, in 1919. This peak can be attributed to an effect of selection of the most fecund couples, who also have a higher propensity to produce twins.
Volume (Year): 59 (2004)
Issue (Month): 6 ()
|Contact details of provider:|| Web page: http://www.cairn.info/revue-population-english.htm |
When requesting a correction, please mention this item's handle: RePEc:cai:poeine:pope_406_0765. See general information about how to correct material in RePEc.
For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (Jean-Baptiste de Vathaire)
If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.
If references are entirely missing, you can add them using this form.
If the full references list an item that is present in RePEc, but the system did not link to it, you can help with this form.
If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your profile, as there may be some citations waiting for confirmation.
Please note that corrections may take a couple of weeks to filter through the various RePEc services.