Evidence Library · Reading a number

Nobody counts pregnancies in the United States

The last national estimate of how many pregnancies happen each year covers data through 2008.

This is the most useful thing in this whole section, and almost nobody says it.

The United States counts births very well. Every live birth generates a birth certificate, and in 2024 there were 3,628,934 of them. The United States also counts hospital deliveries well, through hospital discharge records.

It does not count pregnancies.

To count pregnancies you would have to add live births, plus induced abortions, plus an estimate of miscarriages and stillbirths. The National Center for Health Statistics used to publish exactly that series. The most recent edition is titled Estimated pregnancy rates and rates of pregnancy outcomes for the United States, 1990-2008, published in 2012. No more recent national pregnancy-rate report could be located.

So what happens to every "percent of pregnancies" figure you readFor a US population, a statement of the form "X percent of pregnancies are affected by Y" is almost always one of two things. Either it is a global or clinic figure borrowed from a guideline written for clinicians, or it is a per-live-birth or per-hospital-delivery number that has been relabelled. Neither is dishonest. Both are frequently repeated without the label.

This is not a reason to distrust numbers. It is a reason to ask one short question about any number you are given, which will serve you for the rest of your life in medicine.

Say this out loud

"Percent of what? Live births, hospital deliveries, or pregnancies?"

"Is that a US figure, or one borrowed from somewhere else?"

Where this comes from:

506. Ventura SJ, Curtin SC, Abma JC, Henshaw SK. Estimated pregnancy rates and rates of pregnancy outcomes for the United States, 1990-2008. Natl Vital Stat Rep. 2012;60(7):1-21.

490. Womack LS, DeSisto CL, Clark EA, Ford ND, Hollier LM, Menard MK, et al. Common complications and conditions at delivery hospitalization by race and ethnicity in the United States. Obstet Gynecol. 2026;147(4):540-9.

271. Osterman MJK, Hamilton BE, Martin JA, Driscoll AK, Valenzuela CP. Births: final data for 2024. Natl Vital Stat Rep. 2026;75(2):1-48.

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This page is educational. It supports the conversation with your own clinicians. It is not consent to any treatment, and it cannot assess you. If you are worried about a symptom now, see urgent warning signs.