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. Author manuscript; available in PMC: 2010 Jan 1.
Published in final edited form as: Am J Obstet Gynecol. 2008 Sep 25;200(1):56.e1–56.e6. doi: 10.1016/j.ajog.2008.06.039

Table 3.

Probability of major morbidity stratified by probability of VBAC and delivery intent

Trial of labor Elective repeat cesarean P*
N % N %
<60% 17/1904 0.89 6/2611 0.23 <.01
60–69% 2/1187 0.17 4/1439 0.28 0.70
70–79% 4/1413 0.28 2/1111 0.18 0.70
80–89% 5/1462 0.34 0/536 0.0 0.33
• 90% 0/1694 0.0 1/184 0.54 0.10
P<.0001** P = 0.75**
*

Chi-square or Fisher’s exact

**

Cochran-Armitage test of trend