Abstract：
INTRODUCTION:The sex ratio at birth (usually denoted as M/T=male divided by total births) is influenced by cultural factors. The Chinese Zodiac holds that women born in the Fire Horse year (1966) would be unlucky. It has been shown that significantly less children were born in Japan in this year. This study was carried out in order to ascertain whether this year was also associated with any change in M/T. METHODS:Annual male and female live births were obtained from a World Health Organization Mortality database for 1966±16years. RESULTS:This study analysed a total of 58922297 births over the period 1950-82 (M/T 0.5146). The 1966 dip in total births was associated with a highly significant spike in M/T in the same year of 0.5184 (p<0.0001). 1965 and 1967 showed significant reductions from baseline M/T (p<0.0001). The periods immediately before and after 1965-67 showed higher baseline M/T (p≤0.008). DISCUSSION:Sex blind strategies (contraception and abortion) have been shown to be responsible for the decline in total births. The increase in M/T in 1966 with a significant decline in M/T in 1965 and 1967 may be due to deliberate misattribution of birth year for female babies. M/T follows a U-shaped regression on cycle day of insemination. The higher M/T just before and after 1965-1967 may be due to higher coital rates in couples attempting to have a baby outside the Fire Horse year.
journal_name
Early Hum Devjournal_title
Early human developmentauthors
Grech Vdoi
10.1016/j.earlhumdev.2016.08.011subject
Has Abstractpub_date
2016-12-01 00:00:00pages
133-135eissn
0378-3782issn
1872-6232pii
S0378-3782(16)30239-0journal_volume
103pub_type
杂志文章abstract：:There is a wide differential diagnosis of early onset respiratory distress especially in term babies, and interstitial lung disease (chILD) is a rare but important consideration in this context. chILD manifesting immediately after birth is usually related to mutations in surfactant protein genes, or conditions related...
journal_title：Early human development
pub_type： 杂志文章
doi：10.1016/j.earlhumdev.2020.105186
更新日期：2020-11-01 00:00:00
abstract：:The effect of fetal growth restriction on cardiac size is controversial. It has not been established whether cardiac size of small for gestational age (SGA) fetuses is smaller or larger than appropriate for gestational age (AGA) fetuses. Such controversy may stem from heterogeneity in study population in previous repo...
journal_title：Early human development
pub_type： 杂志文章
doi：10.1016/s0378-3782(96)01840-3
更新日期：1997-04-25 00:00:00
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journal_title：Early human development
pub_type： 杂志文章
doi：10.1016/s0378-3782(96)01843-9
更新日期：1997-01-20 00:00:00
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journal_title：Early human development
pub_type： 杂志文章
doi：10.1016/0378-3782(96)01736-7
更新日期：1996-09-20 00:00:00
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journal_title：Early human development
pub_type： 杂志文章
doi：10.1016/j.earlhumdev.2015.06.009
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journal_title：Early human development
pub_type： 杂志文章
doi：10.1016/j.earlhumdev.2004.04.016
更新日期：2004-11-01 00:00:00
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journal_title：Early human development
pub_type： 杂志文章
doi：10.1016/j.earlhumdev.2010.08.026
更新日期：2010-12-01 00:00:00
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journal_title：Early human development
pub_type： 杂志文章,评审
doi：10.1016/j.earlhumdev.2005.03.006
更新日期：2005-05-01 00:00:00
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journal_title：Early human development
pub_type： 杂志文章
doi：10.1016/j.earlhumdev.2005.10.004
更新日期：2005-12-01 00:00:00
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journal_title：Early human development
pub_type： 杂志文章
doi：10.1016/j.earlhumdev.2014.09.011
更新日期：2014-12-01 00:00:00
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journal_title：Early human development
pub_type： 杂志文章,评审
doi：10.1016/S0378-3782(12)70011-7
更新日期：2012-05-01 00:00:00
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journal_title：Early human development
pub_type： 杂志文章
doi：10.1016/j.earlhumdev.2007.09.018
更新日期：2008-06-01 00:00:00
abstract：BACKGROUND:Positional plagiocephaly refers to atypical development of an uneven head shape with asymmetrical head orientation as a post-natal risk factor. The development of the head orientation profile and its relationship with positional plagiocephaly are lacking. OBJECTIVES:To explore the head orientation profile d...
journal_title：Early human development
pub_type： 杂志文章
doi：10.1016/j.earlhumdev.2016.03.001
更新日期：2016-05-01 00:00:00
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journal_title：Early human development
pub_type： 杂志文章
doi：10.1016/0378-3782(95)01721-6
更新日期：1996-07-05 00:00:00
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journal_title：Early human development
pub_type： 临床试验,杂志文章
doi：10.1016/j.earlhumdev.2010.04.005
更新日期：2010-05-01 00:00:00
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journal_title：Early human development
pub_type： 杂志文章
doi：10.1016/j.earlhumdev.2003.07.002
更新日期：2004-08-01 00:00:00
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journal_title：Early human development
pub_type： 杂志文章
doi：10.1016/s0378-3782(00)00091-8
更新日期：2000-11-01 00:00:00
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journal_title：Early human development
pub_type： 杂志文章
doi：10.1016/s0378-3782(00)00071-2
更新日期：2000-05-01 00:00:00
abstract：:Oesophageal pressure and ventilation were recorded during sleep in healthy full-term neonates with sleep state defined by one of two methods; in 35 infants by combined behavioural and electroencephalographic criteria, and in a further 13 infants by behavioural criteria alone. Spontaneous oesophageal contractions occur...
journal_title：Early human development
pub_type： 杂志文章
doi：10.1016/0378-3782(88)90054-0
更新日期：1988-12-01 00:00:00
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journal_title：Early human development
pub_type： 杂志文章
doi：10.1016/0378-3782(94)90098-1
更新日期：1994-12-16 00:00:00
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journal_title：Early human development
pub_type： 杂志文章
doi：10.1016/s0378-3782(99)00007-9
更新日期：1999-05-01 00:00:00
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journal_title：Early human development
pub_type： 杂志文章
doi：10.1016/0378-3782(82)90036-6
更新日期：1982-12-01 00:00:00
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journal_title：Early human development
pub_type： 杂志文章
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更新日期：2020-11-12 00:00:00
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journal_title：Early human development
pub_type： 杂志文章
doi：10.1016/0378-3782(92)90040-n
更新日期：1992-12-01 00:00:00
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journal_title：Early human development
pub_type： 杂志文章
doi：10.1016/0378-3782(85)90086-6
更新日期：1985-09-01 00:00:00
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journal_title：Early human development
pub_type： 杂志文章
doi：10.1016/s0378-3782(97)01885-9
更新日期：1997-09-19 00:00:00
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journal_title：Early human development
pub_type： 杂志文章
doi：
更新日期：1988-08-01 00:00:00
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journal_title：Early human development
pub_type： 杂志文章
doi：10.1016/j.earlhumdev.2019.104843
更新日期：2019-12-01 00:00:00
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journal_title：Early human development
pub_type： 杂志文章
doi：10.1016/0378-3782(85)90121-5
更新日期：1985-05-01 00:00:00
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journal_title：Early human development
pub_type： 杂志文章
doi：10.1016/0378-3782(86)90114-3
更新日期：1986-10-01 00:00:00
