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2. Human sex ratio - Wikipedia

   en.wikipedia.org/wiki/Human_sex_ratio

   Several studies have examined human birth sex ratio data to determine whether there is a natural relationship between the age of the mother or father and the birth sex ratio. For example, Ruder has studied 1.67 million births in 33 states in the United States to investigate the effect of parents' ages on birth sex ratios. [59]

3. Sex ratio - Wikipedia

   en.wikipedia.org/wiki/Sex_ratio

   As of 2024, the global sex ratio at birth is estimated at 107 boys to 100 girls (1,000 boys per 934 girls). [8] By old age, [ clarification needed ] the sex ratio reverses, with 81 older men for every 100 older women; [ For this statistic to be meaningful, it is necessary to define the age range that is meant by "old age". ] across all ages ...

4. List of sovereign states by sex ratio - Wikipedia

   en.wikipedia.org/wiki/List_of_sovereign_states...

   Sex ratio by country for total population. Blue represents more males than the world average of 1.07 males/females. (2020) The human sex ratio is the comparative number of males with respect to each female in a population. This is a list of sex ratios by country or region.

5. Sex selection - Wikipedia

   en.wikipedia.org/wiki/Sex_selection

   Scholars argue that the expected birth sex ratio in a normal population is in the range of 103 to 107 males to females at birth. [10] [11] However, in a number of countries of South Asia, East Asia and the Caucasus, the sex ratio of children is severely distorted. [12] The problem is particularly severe in China and India. The preference for ...

6. One-child policy - Wikipedia

   en.wikipedia.org/wiki/One-child_policy

   The disparity in the gender ratio at birth increased dramatically after the first birth, for which the ratios remained steadily within the natural baseline over the 20-year interval between 1980 and 1999. Thus, a large majority of couples appeared to accept the outcome of the first pregnancy, whether it was a boy or a girl.

7. Why are there so few male birth-control options?

   www.aol.com/lifestyle/why-few-male-birth-control...

   A 2021 review of multiple studies looking at attitudes toward new male birth control options found that “there is consistent interest among both men and women” and a “willingness to use them ...

8. What Project 2025 actually says about birth control is alarming

   www.aol.com/project-2025-actually-says-birth...

   A video posted on their X (Twitter) account asserts that removing the “senseless use of birth control pills” would “[return] the consequentiality to sex”.

9. Demographics of China - Wikipedia

   en.wikipedia.org/wiki/Demographics_of_China

   The sex ratio (the number of males for each female in a population) at birth was 118.06 boys to every 100 girls (54.14%) in 2010, higher than the 116.86 (53.89%) of 2000, but 0.53 points lower than the ratio of 118.59 (54.25%) in 2005. [52]