Background: To estimate the cost-effectiveness of an ambulance-based referral system an dedicated to emergency obstetrics and neonatal care (EmONC) in remote sub-Saharan settings.
Methods: In this prospective study performed in Oromiya Region (Ethiopia), all obstetrical cases referred to the hospital with the ambulance were consecutively evaluated during a three-months period. The health professionals who managed the referred cases were requested to identify those that could be considered as undoubtedly effective.