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Clinical Obesity Staging Tools (COST)

This study has been completed.
ClinicalTrials.gov Identifier:
First Posted: April 28, 2010
Last Update Posted: September 20, 2010
The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
Information provided by:
Imperial College London
This study will assess various published staging tools to assess the health impacts of obesity on individuals. The aim is to identify benefits and drawbacks, and thus help Obesity Centres and GPs better assess obese individuals as well as better identify who benefits most from having weight loss treatment.

Condition Intervention
Morbid Obesity Procedure: Bariatric surgery

Study Type: Observational
Study Design: Observational Model: Cohort
Time Perspective: Prospective
Official Title: Assessing Clinical Staging Tools for Tracking the Impacts of Obesity on Individuals

Further study details as provided by Imperial College London:

Primary Outcome Measures:
  • Changes in Obesity Scores after weight loss treatment [ Time Frame: Minimum of 1 year follow-up ]

Secondary Outcome Measures:
  • Changes in obesity scores in various subgroups [ Time Frame: Minimum of 1 year follow-up ]
    Changes in obesity scores in patients with carious co-morbid conditions (eg, type 2 diabetes, sleep apnoea) before bariatric surgery

  • Inter-rater variability [ Time Frame: Minimum of 1 year follow-up ]
    Variability in obesity scores assigned by various observers

Enrollment: 600
Study Start Date: October 2009
Study Completion Date: August 2010
Primary Completion Date: August 2010 (Final data collection date for primary outcome measure)
Groups/Cohorts Assigned Interventions
Obese patients Procedure: Bariatric surgery
Gastric bypass, Sleeve gastrectomy, or Gastric banding


Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.

Ages Eligible for Study:   16 Years and older   (Child, Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Sampling Method:   Non-Probability Sample
Study Population
Individuals with BMI > 40 or >35 and a obesity-related medical condition

Inclusion Criteria:

  • Morbid obesity
  • At least 1 year follow-up after bariatric surgery

Exclusion Criteria:

  Contacts and Locations
Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT01112228

United Kingdom
Imperial Weight Centre, Imperial College London
London, United Kingdom
Sponsors and Collaborators
Imperial College London
Study Chair: Carek le Roux, MD PhD Imperial College London
  More Information

Publications automatically indexed to this study by ClinicalTrials.gov Identifier (NCT Number):
Responsible Party: Dr Carel le Roux, Imperial College London
ClinicalTrials.gov Identifier: NCT01112228     History of Changes
Other Study ID Numbers: Clinical Obesity Staging Tools
First Submitted: April 26, 2010
First Posted: April 28, 2010
Last Update Posted: September 20, 2010
Last Verified: September 2010

Additional relevant MeSH terms:
Obesity, Morbid
Nutrition Disorders
Body Weight
Signs and Symptoms