Long-term effects of bariatric surgery

Bariatric Surgery Observation Study Part 2 An Observational Study of Patients Who Underwent Bartiatric Surgery in Public Hospitals in Central Norway 2010-2015.

Observational St. Olavs Hospital · NCT05743166

This study looks at the long-term effects of two types of weight loss surgery, Roux-en-Y gastric bypass and Sleeve gastrectomy, on patients who had these procedures 10-15 years ago to see how they are doing now in terms of weight, health, and quality of life.

Quick facts

Study typeObservational
Enrollment1000 (estimated)
Ages20 Years to 75 Years
SexAll
SponsorSt. Olavs Hospital Academic / other
Locations3 sites (Ålesund and 2 other locations)
Trial IDNCT05743166 on ClinicalTrials.gov

What this trial studies

This observational study aims to investigate the long-term outcomes of Roux-en-Y gastric bypass and Sleeve gastrectomy in patients who underwent these procedures 10-15 years ago. Participants from three public hospitals in Norway will be invited for follow-up assessments, which include clinical examinations, blood sample collection, and questionnaires regarding their health, quality of life, and socioeconomic status. The study will analyze the effectiveness of these surgical methods in weight reduction and the remission of obesity-related comorbidities, as well as the prevalence of complications over time.

Who should consider this trial

Good fit: Ideal candidates are individuals who underwent bariatric surgery at the participating hospitals between January 1, 2010, and December 31, 2015.

Not a fit: Patients who are unable to consent for participation or no longer reside in Norway will not benefit from this study.

Why it matters

Potential benefit: If successful, this study could provide valuable insights into the long-term effectiveness and safety of bariatric surgery, guiding future treatment decisions for obesity.

How similar studies have performed: Other studies have shown success in evaluating long-term outcomes of bariatric surgery, making this approach both relevant and valuable.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Bariatric surgery at Namsos Hospital, St. Olavs hospital or Ålesund Hospital from 01.01.2010 to 31.12.2015

Exclusion Criteria:

* Not able to consent for participation
* Includable participants not longer living in Norway

Where this trial is running

Ålesund and 2 other locations

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Bariatric Surgery Candidate
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.