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.
Calculations are derived from population-level estimates reported in the study’s supplementary data and are provided for informational purposes only.
A live birth refers to a pregnancy that results in the birth of a baby showing signs of life, such as breathing, a heartbeat, or movement, regardless of gestational age.
The live birth calculator estimates the probability that a future pregnancy will result in a live birth, based on maternal age and previous pregnancy outcomes. The estimates are derived from population-level research and are not individual predictions.
The calculator is based on data from a large nationwide study involving more than 2.7 million pregnancies. While it provides well-calibrated population estimates, it cannot account for individual medical conditions, treatments, or circumstances.
Yes. Research shows that previous pregnancy losses, particularly consecutive losses, are associated with a lower probability of live birth at a population level. Maternal age also plays an important role.
Previous live births are generally associated with a slightly higher chance of a future live birth, although the effect is smaller compared to the impact of pregnancy losses and age.
No. The calculator does not predict individual outcomes. It provides population-based estimates that can help give context but should not be used to make personal medical decisions.
No. This calculator is for informational purposes only. Anyone concerned about fertility or pregnancy outcomes should seek advice from a qualified healthcare professional.
The calculator is based on a publication by Kolte et al. in Human Reproduction (2021), which analysed pregnancy outcomes using Danish nationwide registry data over a 40-year period.
