Table 21Incidence of placenta accreta with placenta previa by number of prior cesarean deliveries

StudyNAdjusted OR (95% CI) or P value
Zero prior cesarean deliveries
Miller, 1997258155,6704%(15/432)
Silver, 200623630,1323.3% (13/398)
1 prior cesarean delivery
Miller, 1997258155,670RR 4.45 2.09, 9.50 14% (15/102)
Silver, 200623630,13211% (23/211)
2 prior cesarean deliveries
Miller, 1997258155,67023%
Silver, 200623630,13240% (29/72)
≥2 prior cesarean deliveries
Miller, 1997258155,670RR: 11.32 (5.59 to 22.92) 29.7% (25/84)
3 prior cesarean deliveries
Miller, 199725815567035%
Silver, 20062363013261% (20/33)
4 prior cesarean deliveries
Miller, 199725815567050%
Silver, 20062363013267% (4/6)
≥5 prior cesarean deliveries
Silver, 20062363013267% (2/3)

Abbreviations: CI=confidence interval; OR=odds ratio; RR=relative risk

From: 3, Results

Cover of Vaginal Birth After Cesarean: New Insights
Vaginal Birth After Cesarean: New Insights.
Evidence Reports/Technology Assessments, No. 191.
Guise JM, Eden K, Emeis C, et al.

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