Hospital contribution to variation in rates of vaginal birth after cesarean.

J Perinatol · 2019 · PMC6592715 · PMID 30952949

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a significant trendno p-value reported

To examine the trend in observed VBAC rates over time in the entire cohort, we used ordinary least squares regression to test for a significant trend between 2012 and 2016 using episode year as the independent variable.

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