"This study found evidence of a protective effect for increased hospital volume on birth asphyxia in California. If further work confirms the apparent higher risk conferred by delivery of lower-risk pregnancies in a setting of low obstetric volume, providers and patients should consider how to improve outcomes for these lower-risk births. Solutions may differ based on the geographic setting of the hospital and the patients served."
The association between hospital obstetric volume and perinatal outcomes in California. American Journal of Obstetrics & Gynecology. Volume 207, Issue 6 , Pages 478.e1-478.e7, December 2012