This trial is active, not recruiting.

Conditions morbid obesity, weight reduction
Treatment decider guider: weight loss
Phase phase 2
Sponsor University of Michigan
Collaborator Patient-Centered Outcomes Research Institute
Start date January 2014
End date June 2018
Trial size 1000 participants
Trial identifier NCT02364128, HUM00083670


At least 15 million Americans are morbidly obese, or more than 100 pounds overweight. Medical treatments including drugs and behavior modification have proven ineffective in producing significant and lasting weight loss in this group. While bariatric surgery is extremely effective for most patients, it also carries risks for both short and long-term complications. There are currently four different types of bariatric surgery available and the risks and benefits of these procedures vary widely and are strongly affected by patient and clinical characteristics.

Decision making under these circumstances should reflect informed patient's values and preferences regarding these trade-offs. Instead, the choice of bariatric procedure is more often driven by the beliefs and experiences of the bariatric surgeon that a patient happens to see. Variability in the type of surgery recommended to patients likely results from some combination of surgeons' subjective opinions and personal experiences with regard to the risks and benefits of the treatment options and delegated decision making on the part of patients.

The goals of this research proposal are to develop, implement, and evaluate an informed decision support tool for treatment of morbid obesity. This project will be conducted within the context of the Michigan Bariatric Surgery Collaborative (MBSC), which is a statewide clinical registry and quality improvement program that has the participation of virtually every bariatric surgeon and program in the state of Michigan. The MBSC registry now includes externally audited clinical data for more than 35,000 consecutive bariatric surgery patients. MBSC outcome measures include complications occurring within 30 days as well as weight loss, comorbidity resolution, quality of life and satisfaction at 1, 2, and 3 years after bariatric surgery.

United States No locations recruiting
Other countries No locations recruiting

Study Design

Allocation randomized
Intervention model parallel assignment
Primary purpose other
Masking no masking
(No Intervention)
Potential bariatric surgery patients who receive both the baseline questionnaire and follow-up questionnaire.
Potential bariatric surgery patients who receive both the baseline questionnaire decision aid/conjoint analysis and follow-up questionnaire.
decider guider: weight loss
Decision aid tool about weight loss treatment

Primary Outcomes

Decision outcome by Decider Guider Questionnaire
time frame: 24 months
Patient specific outcome by Decider Guider Questionnaire
time frame: 24 months

Secondary Outcomes

Knowledge, as measured by a follow-up Decider Guider questionnaire to test knowledge
time frame: 24 months
Preferences as measured by Decider Guider Questionnaire
time frame: 24 months
time frame: 24 months
Quality of Life as measured by Decider Guider Questionnaire
time frame: 24 months
Comorbidity Resolution as measured by Decider Guider Questionnaire
time frame: 24 months
Patient Satisfaction as measured by Decider Guider Questionnaire
time frame: 24 months

Eligibility Criteria

All participants at least 18 years old.

Inclusion Criteria: - All patients considering undergoing bariatric surgery in the state of Michigan who are 18 or older. - All patients, regardless of gender or racial/ethnic background, will be recruited to participate in the study in the same way. Exclusion Criteria: - Patients under the age of 18

Additional Information

Official title Patient-Centered Outcomes Research Institute (PCORI)- Improving Patient Decisions About Bariatric Surgery
Description Our specific aims are: 1. To develop a web-based interactive decision support tool to incorporate tailored information regarding risks and benefits of the treatment options (from regression-based prediction models derived on the 35,000 patients already in the MBSC registry) with information regarding other salient attributes of the treatment options (derived from focus groups and semi-structured interviews with stakeholders including bariatric surgery patients, bariatric program staff, and surgeons). 2. To perform a quasi-experimental study comparing the decision support tool with usual care to determine its effects on patient decisions (treatment choice, knowledge, treatment-preference concordance, and decisional conflict) and on patient outcomes including weight loss, patient satisfaction, and improvements in quality of life after surgery. This research is closely aligned with the goals of PCORI and will have direct impacts on patients and caregivers by providing information that is required to improve healthcare decision-making for this prevalent, damaging, and costly condition.
Trial information was received from ClinicalTrials.gov and was last updated in April 2017.
Information provided to ClinicalTrials.gov by University of Michigan.