Sex ratio in china by age group. In 2021, china's official census report showed a sex ratio of 112 male to 100 female births, compared to a global average of 105 or 106 male to 100 female births This is down from a high of 118 male to 100 female births from 2002 to 2008 [2] the sex imbalance in some rural areas and even cities is higher, at 130 boys to 100 girls (e.g The sex ratio of china's population varies significantly across age groups Population pyramid, age structure, sex ratio (males to females), life expectancy, dependency ratio of china
China's population declined for the third consecutive year in 2024, dropping by 1.39 million to 1.408 billion, reflecting demographic challenges Rising living costs, delayed marriages, and low immigration rates contribute to fewer births An aging population strains the social security system, causing concerns over future economic stability and potential policy changes regarding retirement age. Background china’s sex ratio at birth (srb) has declined in the past decade but still exceeds the normal level This study seeks to depict the srb trend in the past two decades.methods we depicted the srb trend, including srb by birth order, children composition, residence and hukou type, education, race and province using latest data available from multiple data sources and standardisation.
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