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Birth weight : ウィキペディア英語版
Birth weight

Birth weight is the body weight of a baby at its birth.〔(Definitions ) from Georgia Department of Public Health. Date: 12/04/2008. Original citation: "Birthweight: Infant's weight recorded at the time of birth"〕
There have been numerous studies that have attempted, with varying degrees of success, to show links between birth weight and later-life conditions, including diabetes, obesity, tobacco smoking and intelligence.
==Determinants==
There are basically two distinct determinants for birth weight:
*The duration of gestation prior to birth, that is, the gestational age at which the child is born
*The prenatal growth rate, generally measured in relation to what weight is expected for any gestational age.
The incidence of birth weight being outside what is normal is influenced by the parents in numerous ways, including:
*Genetics
*The health of the mother, particularly during the pregnancy. Intercurrent diseases in pregnancy are sometimes associated with decreased birth weight. For example, Celiac disease confers an odds ratio of low birth weight of approximately 1.8.
*Environmental factors, including exposure of the mother to secondhand smoke〔 pp. 198–205〕
*Economic status of the parents gives inconsistent study findings according to a review on 2010, and remains speculative as a determinant.
*Other factors, like multiple births, where each baby is likely to be outside the AGA (appropriate for gestational age), one more so than the other.
*The average birth weight is 3.5 kg though the range of normal is between 2.5 and 5 kg (all but 5 % of newborns will fall into this range).

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
ウィキペディアで「Birth weight」の詳細全文を読む



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