A noninferiority randomized controlled trial to compare transabdominal and transvaginal sonography for eligibility assessment prior to medical abortion

Contraception
Annie FuCarolyn L Westhoff

Abstract

To compare transabdominal sonography (TAS) to transvaginal sonography (TVS) in medical abortion eligibility assessment, specifically to measure how often clinicians chose to order additional testing for eligibility assessment following TAS and TVS, and to look for differences by patient and clinician characteristics. Also, to compare patient acceptability between the two modalities. This pragmatic multisite randomized noninferiority trial compared TAS to TVS at 10 New York City and New Jersey health centers that provide medical abortion. Women seeking medical abortion were randomized 1:1 to receive TAS or TVS. Following the study ultrasound examination, clinicians determined whether participants were eligible for medical abortion based on these results or warranted further testing. All participants completed an acceptability questionnaire. We compared additional testing and acceptability between TAS and TVS. Of those randomized to TAS, 63/317 (19.9%) received additional testing compared to 15/312 (4.8%) randomized to TVS. After TAS, most additional testing consisted of a same-day TVS. Other tests included β-hCG testing, scheduled repeat sonography or return visit. After TAS, 13.4% seen by physicians and 27.6% seen by advanced p...Continue Reading

Associated Clinical Trials

Feb 9, 2017·Carolyn WesthoffCarolyn Westhoff

Citations

Aug 18, 2020·Obstetrics and Gynecology·UNKNOWN American College of Obstetricians and Gynecologists’ Committee on Practice Bulletins—Gynecology, Society of Family Planning

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