Impact of a quality improvement project to reduce the rate of obstetric anal sphincter injury: a multicentre study with a stepped-wedge design.
Ipek Gurol-UrganciPosy BidwellNick SevdalisL SilvertonV NovisR FreemanA HellyerJan H P van der MeulenJoanna C RoperPublished in: BJOG : an international journal of obstetrics and gynaecology (2020)
OASI Care Bundle reduced severe perineal tear rates without affecting caesarean section rates or episiotomy use.