Longitudinal Retrospective Analysis of Prospectively Collected Data for Outcomes After Primary Sleeve Gastrectomy (N=20 000) in the Swedish National Quality Registry SOReg (Scandinavian Obesity Surgery Registry)

NCT07280845 | Completed

• 1 other identifier: EPM: 2023-07198-01
• Study Type: observational
• Target: 19,977
• Locations: 1 country
• Sites: 1

Brief Summary

The main questions to answer are:

• Weight outcomes in weight strata over time?
• What was the proportion of patients reaching sufficient weight outcome in different weight strata?
• To what extent are co-morbid conditions improved or put in remission?
• What is the risk of experience a complication?
• What was the proportion of patients converted to another bariatric procedure?
• What us the reason for conversion? Participants already undergone bariatric surgery as part of their regular medical care for severe obesity and only registry data will be analyzed.

Conditions

Severe Obesity; Sleeve Gastrectomy

Keywords

Sleeve, Sleeve gastrectomy, obesity, longitudinal study, national quality registry

Outcome Measures

Primary Outcomes (3)

• Weight loss

  BMI loss in strata of 5 BMI units

  15 years

• Weight loss in BMI strata

  15 years

• Weight loss

  Various definitions of weight loss over time

  Up to 15 years

Study Arms (1)

Patients with severe obesity undergoing primary sleeve gastrectomy in Sweden

Eligibility Criteria

• Age: 18 Years+
• Sex: all
• Healthy Volunteers: No
• Age Groups: Adult (18-64), Older Adult (65+)
• Sampling Method: Non-Probability Sample

Study Population

All patients in Sweden operated with the bariatric techniqu sleeve gastrectomy between 1 Jan 2012 and 31 of Oct 2024

You may qualify if:

• All patients undergoing sleeve gastrectomy in Sweden from 1 Jan 2012
• Being registered in the national quality register SOReg

You may not qualify if:

• Previously undergone bariatric surgery
• Sleeve gastrectomy as a planned two staged intervention

Sponsors & Collaborators

• Linkoeping University: lead

Study Sites (1)

Dept of Surgery, Vrinnevi hospital

Linköping, S-581 83, Sweden

Location

MeSH Terms

Conditions

Obesity, Morbid; Obesity

Condition Hierarchy (Ancestors)

Overweight; Overnutrition; Nutrition Disorders; Nutritional and Metabolic Diseases; Body Weight; Signs and Symptoms; Pathological Conditions, Signs and Symptoms

Study Officials

• Torsten Olbers, MD, Professor

  Linköpings universitet, 202100-3096

  STUDY CHAIR

Study Design

• Study Type: observational
• Observational Model: COHORT
• Time Perspective: OTHER
• Target Duration: 15 Years
• Sponsor Type: OTHER GOV
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Professor

Study Record Dates

• First Submitted: December 1, 2025
• First Posted: December 12, 2025
• Study Start: January 1, 2012
• Primary Completion: December 31, 2023
• Study Completion: October 31, 2024
• Last Updated: December 12, 2025

Record last verified: 2025-12

Data Sharing

• IPD Sharing: Will not share

Locations

SE (1)