Cervical dilation measurements are the cornerstone of labor management, but they are only about 50% accurate.

Dilation 101

What is cervical dilation? Why is it so important? How do practitioners measure it? This 7 minute video is a complete primer on all things dilation.

My Story

Why does dilation matter? Experienced mothers share their birth stories and how cervical dilation measurements made a difference in their lives.

Costs of Inaccuracy

Dilation guides recommendations for admission, intervention, and cesarean section during labor. What happens when the measurement is wrong?


Guest Blogs

We are always excited to share information about this important topic with the world. Check out our guest blogs, and contact us if you would like to host a guest blog!


Stories from Moms

No one knows better than these moms why cervical dilation measurements are important. Thanks to these moms for their honesty and willingness to share their inspiring stories. Click through the photo reel below for some highlights and visit the Dilation Matters Blog for these inspirational stories of motherhood and life.


Research on Dilation

Evidence-based medicine is the way of the future. Check out the extensive research that clinicians and scientists have conducted on cervical dilation and the ways it impacts labor.

This is the only study of precision of cervical dilation measurements in labor. Two experienced obstetricians measured the same 508 women’s dilations. They agreed on only 49.2% of measurements and disagreed by two or more centimeters for 11% of measurements. 

Buchmann, E and Libhaber E. Accuracy of cervical assessment in the active phase of labour. BJOG. 2007 Jul;114(7):833-7.

The first study on accuracy of cervical dilation tested 36 midwives and 24 obstetricians using cervical simulators. Providers chose the correct dilation 48.6% of the time, and no practitioner was correct on all measurements.

Tuffnell, D, Bryce, F, Johnson, N, and Lilford, R. Simulation of Cervical Changes in Labour: Reproducibility of Expert Assessment. Lancet. 1989 Nov 4;2(8671):1089-90.

Click here to read more studies.