NTSV stands for nulliparous, term, singleton, vertex: a first-time pregnancy, at full term, with one baby positioned head-down. It's a specific, low-risk group, which is exactly why researchers use it to compare hospitals. Looking at c-section rates across a hospital's entire patient population would mix in high-risk pregnancies and skew the numbers, so the NTSV rate isolates a group where a vaginal birth is generally expected to be possible.
A lower NTSV c-section rate at a given hospital generally suggests that its practices, from admission timing to how labor is managed, tend to support vaginal birth for this group. It doesn't tell you everything. It doesn't account for your specific health history, your provider's judgment, or your own priorities. Think of it as one input among several, alongside conversations with your own care team.
If you're comparing hospitals, the NTSV rate is a reasonable place to start, paired with your provider's guidance and what matters most to you. For a closer look at how Bay Area hospitals actually compare on this and other measures, see Choosing the Right Hospital for Your Birth.
This post is for educational purposes only and is not medical advice. Talk with your care provider about what these numbers mean for your specific pregnancy.