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. Author manuscript; available in PMC: 2015 Sep 1.
Published in final edited form as: J Perinatol. 2014 Sep 25;35(3):167–172. doi: 10.1038/jp.2014.179

Figure 2. Classification and Regression Tree Analysis for Delivery Route in Nulliparas.

Figure 2

CD cesarean delivery, VD vaginal delivery, GA gestational age

Data presented as CD% and number in each shape (ovals and rectangles)

Rectangles represent terminal nodes (no other variables had a statistically significant impact on delivery route).

3rd branches were variations of maternal age, gestational age, or race, but none represented extreme occurrences of cesarean delivery (data not shown).