“…Also, in a previous study based on pan‐Canadian data, we showed that the effect of operative vaginal delivery on perinatal and maternal severe morbidity/mortality was not modified by institutional delivery volume. Finally, if the caesarean delivery group benefited from more skilled operators and less complicated fetal positions (as postulated by Mohan et al), then the effect of midcavity operative vaginal delivery on perinatal and maternal severe morbidity/mortality documented in our study represent underestimates of the true effect.…”