This strategy was done using EMBASE classic (1947 through present). Using the all subject words feature the term “Home Delivery” was searched. The term “Childbirth” was also searched and combined with any form of the word “Hospital?” with the ? indicating a wild card to pick up any forms of the word, such as “hospitals” and “hospitalization.”
The Cochrane Database of Systematic Reviews was also searched for relevant publications. Titles and abstracts of cita- tions were reviewed for potential rele- vance and selected manuscripts were re- viewed. References in these papers were manually reviewed and retrieved if po- tentially relevant.