Abstract
Overestimated SRB and Missing Girls in China.
Highlights
China’s sex ratio at birth (SRB) has been high during the past 4 decades, well exceeding the generally accepted normal range of 102–107 (United Nations Department, 1955)
The high sex ratio at birth (SRB) and its related consequences like missing women and male marriage squeeze have been a hot concern in China
According to annual birth numbers and SRB, male births from 1980 to 2000 sums up to 239.26 million, and female births to 211.91 million, with a sex ratio of 112.91, all well exceeding the corresponding numbers in the 2020 population census
Summary
China’s SRB has been high during the past 4 decades, well exceeding the generally accepted normal range of 102–107 (United Nations Department, 1955). The 2020 census data indicated a sex ratio of 108.9 and 17.52 million more males than females for the age group 20–40. With this information, it can be calculated that in the 2020 census, men aged 20–40 numbered 214.37 million and women in this age group numbered 196.85 million. According to annual birth numbers and SRB (or sex ratio for the population under 1 year of age in annual one in per thousand population sample survey), male births from 1980 to 2000 sums up to 239.26 million, and female births to 211.91 million, with a sex ratio of 112.91, all well exceeding the corresponding numbers in the 2020 population census. The decline in numbers can be partially attributed to deaths, but the sex ratio difference between 112.91 and 108.9 can’t be attributed to the difference by gender in mortality and survival levels
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