PCORnet Bariatric Study

Providing real-world data to help make informed decisions about bariatric surgery



Welcome to the PCORnet Bariatric Study (PBS) website. PBS is one of the first studies to use the PCORnet data, engagement, and governance infrastructure to conduct comparative effectiveness research.

Our Goal

The PCORnet Bariatric Study will compare the health benefits and safety associated with the three main methods of bariatric (also called weight loss) surgery. We seek to provide accurate estimates of the one-, three-, and five-year benefits and risks of having undergone either:

  • Roux-en-y gastric bypass (RYGB),
  • Adjustable gastric banding (AGB),
  • Sleeve gastrectomy (SG).

We are focusing on health outcomes that have been shown to be most important to adults and adolescents who are affected by severe obesity:

  • Weight loss,
  • Improvement in diabetes, and
  • Risk of adverse events.

Our ultimate goal is to provide patients and their health care providers the information they need to choose which surgery, if any, is best for them.

Our Findings

Click here for published findings from our study.

The PCORnet Bariatric Study is funded through a Patient-Centered Outcomes Research Institute (PCORI) Award (#OBS-1505-30683).

This website is solely the responsibility of the author(s) and does not necessarily represent the views of the other organizations participating in or collaborating with PCORnet® or of the Patient-Centered Outcomes Research Institute (PCORI). 

We are part of the National Patient-Centered Clinical Research Network (PCORnet)

More information

Find more information about the study cohort and the health outcomes we are interested in on clinicaltrials.gov.

Learn more about the bariatric surgery procedures we are studying.


Contact: Jane Anau
Research Project Manager