that risk selection enables care providers to anticipate the limitations of their own facilities, and Smit and colleagues [72], studied whether access to pulse oximetry for the assessment of infants born in a community based midwifery care setting could prevent referral to a paediatrician. Our analysis also showed that regulation of access to resources is sometimes used to Fig 1. Study selection process [41]. ONE Risk selection in maternal and newborn care | June 8, 2020 5 / 22 73 3 TOWARDS A BETTER UNDERSTANDING OF RISK SELECTION