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What percentage of the female population is pregnant at any one time?
Wiki User
∙ 7y ago
According to the CIA World Factbook (cia.gov/library/publications/the-world-factbook/geos/us.html), the birthrate for the US is 14.18 births/1,000 population, and the US population is 303,824,640, which means that about 4,308,233 babies will be born in the US in 2008. That's 11,795 babies per day, and the average gestation period is 280 days, which means that at least 3,302,684 women are pregnant at any given time. There are about 156,469,690 females in the US, and 102,161,823 women 15-64 (both numbers from the CIA factbook), so at least 2.12% of all females, or 3.23% of women of roughly childbearing age, are pregnant in the US at any given time.
The reason I say "at least" in these estimates is because this only takes into account pregnancies that end in a live birth. A very high proportion of pregnancies end in spontaneous or medical abortion, but to take this into account one would have to learn how many pregnancies end this way and at what stage of the pregnancy, which is more research than I feel like doing. It would also be difficult because women can miscarry at an early stage of pregnancy without even knowing it. On the other hand, these estimates also don't take into account multiple births- I'm assuming that every birth means that one woman was pregnant for 280 days, while in reality, a woman can give birth to more than one child at once. So this is a rough estimate, but I imagine that the multiple births issue does not make a huge difference.
Also from the CIA world factbook (cia.gov/library/publications/the-world-factbook/geos/xx.html), the world birthrate is 20.18/1000 population and the world population is 6,706,993,152, meaning that there are at least 103,756,863 women pregnant at any time. There are 3,319,961,610 females total and 2,139,463,750 age 15-64. Thus, at least 3.13% of females are pregnant, or at least 4.85% of women of roughly childbearing age.
Wiki User
∙ 7y ago
On average, about 6% of women aged 15-44 are pregnant at any given time. This percentage can vary based on factors like age, country, and social Demographics.
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yeah
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Once a month, during ovulation.
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just for one time it has to unow with it depends on the species.
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