A live birth refers to a pregnancy that results in the birth of a baby showing signs of life. The likelihood of a live birth can be influenced by factors such as maternal age and previous pregnancy outcomes, including live births and pregnancy losses.

This live birth calculator estimates the chance that a future pregnancy will result in a live birth based on large-scale population research. By selecting maternal age and pregnancy history, users can explore how different sequences of outcomes are associated with changes in probability.
Live birth calculator
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Selected: 25

Pregnancy history:
Last
2nd
3rd
4th
5th
* LB = live birth; PL = pregnancy loss
Maternal age25
Previous outcomesPL PL
Prob. of birth
The live birth calculator is based on the publication by Kolte et al. (Human Reproduction, 2021; 36(4):1065–1073), a Danish nationwide registry-based cohort study of more than 2.7 million pregnancies.
Calculations are derived from population-level estimates reported in the study’s supplementary data and are provided for informational purposes only.
FAQs on Live Birth and Pregnancy Outcomes
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