Other analyses
Higher degree perineal lacerations occurred more frequently in women with EA (3.2% vs. 2.8%). Women with EA experienced longer duration of delivery (7 hours vs. 10 hours) and instrumental delivery was drastically more common in women with EA (13.5% vs. 29.8%) (Table 2). Rates of EA increased per year, ranging from 19% in 2008 to 24% in 2017. Hospitals categorised as Perinatalcentre 2 in the registry had the highest rates of EA in vaginal delivery (25.5%).

Discussion