Seasonal variation of neural tube defects in Newfoundland and elsewhere.
Seasonal variation of neural tube defects in Newfoundland and elsewhere.
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DOI：
10.1002/tera.1420330307
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发表时间：
1986-06
期刊：
影响因子：
--
通讯作者：
F. Fraser;M. Frecker;P. Allderdice
中科院分区：
文献类型：
--
作者：
F. Fraser;M. Frecker;P. Allderdice
在纽芬兰，无脑畸形的婴儿通常在一月份怀上，而脊柱裂的婴儿通常在八月份怀上。这些和以往的观察结果表明：(1)在种群频率既不很高也不很低的情况下，季节波动最大；(2)在不同种群中，无脑婴儿的受孕高峰期可能出现在除8 - 11月外的任何季节，而脊柱裂的季节高峰期几乎只局限于5 - 8月。
In Newfoundland, babies with anencephaly are conceived most often in January, and those with spina bifida in August. These and previous observations suggest that (1) seasonal fluctuations are greatest when the population frequency is neither very high nor very low, and that (2) the peak season for conception of anencephalic babies may occur in any season except August-November in various populations, whereas for spina bifida seasonal peaks are confined almost exclusively to May-August.