Standardizing abortion research outcomes (STAR): A protocol for developing, dissemination and implementing a core outcome set for medical and surgical abortion.
Approximately one in four of all pregnancies will end in induced abortion with an estimated 56 million taking place worldwide every year . Medical and surgical abortions have low complication rates; however, due to the ubiquity of abortion and the potential for complications if performed unsafely or inappropriately, the need for robust clinical trials and sound guidelines and recommendations is clear [1,2]. Besides the recent release of the Medical Abortion Reporting of Efficacy guidelines, there is a lack of standardized methods for selecting and reporting on outcomes in abortion clinical trials.
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