Publication bias may exist among prognostic accuracy studies of middle cerebral artery Doppler ultrasound

Objectives The objective of this study was to assess if there is evidence of publication bias in prognostic accuracy studies of middle cerebral artery (MCA) or cerebroplacental ratio (CPR) for adverse perinatal outcome. Study Design and Setting We queried PubMed, EMBASE, the Cochrane Library, and ClinicalTrials.gov and searched abstract books of five perinatal conferences (1989–2017). We included prognostic accuracy studies on MCA and/or CPR....