Fundal height dating
African American and Asian women tend to have shorter gestations.
Nowadays, we use ultrasound, when available or if there is a question of menstrual history.
However, determining your due date can seem like a maze these days. Let's take a look at the history of determining due dates and how it affects when your baby will be born. Naegele, circa 1850, determined that the average length of human gestation was approximately 266 days from conception.
There are some things that may alter the length of gestation, which is how long you carry a pregnancy.
Results: The mean GA was less by ultrasound than by SFH measurement or the reported LMP, and the mean differences with the US result were statistically significant (PConclusion: The SFH measurement was found to be more accurate than the reported LMP as a tool to estimate GA and therefore date of delivery, but neither were as accurate as a US scan. Maternal-Newborn Nursing: A Family-Centered Approach Fifth Ed.