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Sex-selective abortion is the practice of terminating a pregnancy based upon the predicted sex of the infant. The selective abortion of female fetuses is most common in areas where cultural norms value male children over female children, especially in parts of People's Republic of China, India, Pakistan, the Caucasus, and Southeast Europe.〔A. Gettis, J. Getis, and J. D. Fellmann (2004). Introduction to Geography, Ninth Edition. New York: McGraw-Hill. pp. 200. ISBN 0-07-252183-X〕〔 Sex-selective abortion affects the human sex ratio—the relative number of males to females in a given age group. Studies and reports focusing on sex-selective abortion are predominantly statistical; they assume that birth sex ratio—the overall ratio of boys and girls at birth for a regional population, is an indicator of sex-selective abortion. This assumption has been questioned by some scholars.〔 Scholars who support the assumption suggest that the expected birth sex ratio range is 103 to 107 males to females at birth.〔(Report of the International Workshop on Skewed Sex Ratios at Birth ) United Nations FPA (2012)〕〔Kraemer, Sebastian. "The Fragile Male." British Medical Journal (2000): n. pag. British Medical Journal. Web. 20 Oct. 2013.〕 Countries considered to have significant practices of sex-selective abortion are those with birth sex ratios of 108 and above (selective abortion of females), and 102 and below (selective abortion of males).〔 ==Human sex ratio at birth== (詳細はhuman sex ratio—the relative number of males to females in a given age group.〔 Studies and reports that discuss sex-selective abortion are based on the assumption that birth sex ratio—the overall ratio of boys and girls at birth for a regional population, is an indicator of sex-selective abortion.〔〔 The natural human sex ratio at birth was estimated, in a 2002 study, to be close to 106 boys to 100 girls. Human sex ratio at birth that is significantly different from 106 is often assumed to be correlated to the prevalence and scale of sex-selective abortion. This assumption is controversial, and a subject of continuing scientific studies. 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「Sex-selective abortion」の詳細全文を読む スポンサード リンク
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