Reduced ratio of male to female births in Japan
نویسندگان
چکیده
منابع مشابه
Reduced ratio of male to female births in several industrial countries: a sentinel health indicator?
CONTEXT The sex ratio of 1.06:1, the ratio of male to female births, has declined over the past decades. Recent reports from a number of industrialized countries indicate that the proportion of males born has significantly decreased, while some male reproductive tract disorders have increased. OBJECTIVES To examine the evidence for declines in the male proportion at birth and suspected causes...
متن کاملThe male to female ratio at birth.
The factors that influence the male to female ratio at birth are legion. Males are usually born in excess and stress decreases the ratio while wellbeing and good health tends to increase it. This paper reviews the multitudes of factors that have been implicated as affecting this ratio, from historical times to date.
متن کاملReligion, Literacy, and the Female-to-Male Ratio in India
This paper proposes a new explanation for religious differences in fertility in India by incorporating the issue of gender bias into the debate. It reports the results from an econometric investigation of the factors influencing the sex ratio at birth and among currently living children, by religion and by caste, for a sample of over 10,000 women in India. The investigation paid particular atte...
متن کاملHurricane Katrina: Influence on the Male-to-Female Birth Ratio
OBJECTIVE This study was carried out in order to ascertain whether or not Hurricane Katrina and related factors (i.e. the amount of rainfall) influenced the male-to-female birth ratio (M/F). MATERIALS AND METHODS Monthly births by gender for the affected states (Alabama, Florida, Louisiana and Mississippi) for January 2003 to December 2012 were obtained from the Centers for Disease Control an...
متن کاملImpact of the 2011 earthquake on marriages, births and the secondary sex ratio in Japan.
On 11th March 2011 a magnitude nine earthquake struck the Tohoku region of Japan. The earthquake resulted in a large tsunami and an accident at the Fukushima Nuclear Power Plant. Previous studies have suggested that demographic indices relating to reproduction and marriage change after such massive disasters (e.g. large earthquakes). The present study investigated whether the number of births, ...
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ژورنال
عنوان ژورنال: International Journal of Epidemiology
سال: 1999
ISSN: 0300-5771,1464-3685
DOI: 10.1093/ije/28.3.597