Seasonality in multiple maternities

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Sammanfattning

In the 19th century, a series of international statistical congresses introduced common rules for the national demographic registers. This activity contributed to the genesis of statistical research. During the history of twin research, Hellin’s law has played a central role because it is an approximately correct association
between the rates of multiple maternities. However, it has been mathematically proven that Hellin’s law cannot hold exactly. The majority of all studies of Hellin’s law are based on empirical rates of multiple maternities. Such studies can never confirm the law, but only identify errors too large to be characterized
as random. It is of particular interest to examine why the rates of higher multiple maternities are sometimes too high or too low when Hellin’s law is used as a benchmark. However, divergences from the law are often difficult to explain and/or eliminate. Different improvements to the law have been proposed. In this article,we study the seasonality of multiple maternities. We apply Hellin’s law to compare the seasonality of twin and triplet rates.
OriginalspråkEngelska
Referentgranskad vetenskaplig tidskriftTwin Research and Human Genetics
Volym20
Utgåva6
Sidor (från-till)558-563
Antal sidor6
ISSN1832-4274
DOI
StatusPublicerad - 09.2017
MoE-publikationstypA1 Originalartikel i en vetenskaplig tidskrift

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  • 112 Statistik

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