The Birthplace Study

https://www.npeu.ox.ac.uk/birthplace#the-birthplace-cohort-study

The Lancet Review: Maternal outcomes and birth interventions among women who begin labour intending to give birth at home compared to women of low obstetrical risk who intend to give birth in hospital

https://www.thelancet.com/journals/eclinm/article/PIIS2589-5370(20)30063-8/fulltext