NCT04907396

Brief Summary

The IWCR is a global scientific study aimed at better understanding the opportunities and barriers for reducing the prevalence of obesity by collecting information from people who have experience with weight management in their everyday lives. The investigators seek to gather information on a wide range of weight management experiences, ranging from weight loss and weight loss maintenance to weight gain and inability to lose weight.

Trial Health

57
Monitor

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Trial has exceeded expected completion date
Enrollment
100,000

participants targeted

Target at P75+ for all trials

Timeline
Completed

Started Dec 2020

Longer than P75 for all trials

Geographic Reach
1 country

7 active sites

Status
recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

December 10, 2020

Completed
6 months until next milestone

First Submitted

Initial submission to the registry

May 25, 2021

Completed
3 days until next milestone

First Posted

Study publicly available on registry

May 28, 2021

Completed
4.5 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

December 1, 2025

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

December 1, 2025

Completed
Last Updated

September 19, 2024

Status Verified

September 1, 2024

Enrollment Period

5 years

First QC Date

May 25, 2021

Last Update Submit

September 3, 2024

Conditions

Weight LossOverweightObesity

Keywords

Weight Loss MaintenanceObesity Management

Outcome Measures

Primary Outcomes (1)

  • Percent weight change

    5 Years

Eligibility Criteria

Age18 Years+
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64), Older Adult (65+)
Sampling MethodNon-Probability Sample
Study Population

Up to 100,000 participants who meet eligibility requirements

You may qualify if:

  • The IWCR is open to anyone 18 years or older who is considering weight loss, is actively engaged in weight loss, or has previously attempted weight loss (including successful and unsuccessful attempts)

You may not qualify if:

  • Minors, below the age of 18
  • Adults who are not able to give informed consent online and complete online surveys

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (7)

University of Alabama at Birmingham

Birmingham, Alabama, 35294, United States

RECRUITING

University of Colorado, Denver

Denver, Colorado, 80204, United States

RECRUITING

University of Kansas Medical Center

Kansas City, Kansas, 66160, United States

RECRUITING

Pennington Biomedical Research Center

Baton Rouge, Louisiana, 70808, United States

RECRUITING

Jean Mayer USDA Human Nutrition Research Center on Aging at Tufts University

Boston, Massachusetts, 02111, United States

RECRUITING

University of New Hampshire

Durham, New Hampshire, 03824, United States

RECRUITING

United States Military Academy, West Point

West Point, New York, 10996, United States

RECRUITING

Related Publications (3)

  • Chui TK, Cedillo YE, El Zein A, Pavela G, Caldwell AE, Peters JC, Friedman JE, DebRoy S, Oslund JL, Das SK, Roberts SB, Hill JO, Sayer RD. Evaluation of socioecological factors on health behaviors and weight change during major life event: A cross-sectional study using data collected during the COVID-19 pandemic. Obes Sci Pract. 2024 Aug 10;10(4):e785. doi: 10.1002/osp4.785. eCollection 2024 Aug.

    PMID: 39130192DERIVED

  • Caldwell AE, More KR, Chui TK, Sayer RD. Psychometric validation of four-item exercise identity and healthy-eater identity scales and applications in weight loss maintenance. Int J Behav Nutr Phys Act. 2024 Feb 23;21(1):21. doi: 10.1186/s12966-024-01573-y.

    PMID: 38395833DERIVED

  • Roberts SB, Das SK, Sayer RD, Caldwell AE, Wyatt HR, Mehta TS, Gorczyca AM, Oslund JL, Peters JC, Friedman JE, Chiu CY, Greenway FL, Donnelly JE, Dao MC, Cuevas AG, Affuso O, Wilkinson LL, Thomas D, Al-Ozairi E, Yannakoulia M, Khazrai YM, Manalac RJ, Bachiashvili V, Hill JO. Technical report: an online international weight control registry to inform precision approaches to healthy weight management. Int J Obes (Lond). 2022 Sep;46(9):1728-1733. doi: 10.1038/s41366-022-01158-4. Epub 2022 Jun 16.

    PMID: 35710944DERIVED

Related Links

MeSH Terms

Conditions

Weight LossOverweightObesity

Condition Hierarchy (Ancestors)

Body Weight ChangesBody WeightSigns and SymptomsPathological Conditions, Signs and SymptomsOvernutritionNutrition DisordersNutritional and Metabolic Diseases

Study Officials

  • Susan B Roberts, PhD

    Tufts University

    PRINCIPAL INVESTIGATOR

  • James O Hill, PhD

    University of Alabama at Birmingham

    PRINCIPAL INVESTIGATOR

  • Sai K Das, PhD

    Tufts University

    STUDY DIRECTOR

  • Drew Sayer, PhD

    University of Alabama at Birmingham

    STUDY DIRECTOR

Central Study Contacts

James E Friedman, MPH

CONTACT

205-962-8185jfriedman@uabmc.edu

Jennifer L Oslund, MS

CONTACT

702-468-2263Jennifer.Oslund@tufts.edu

Study Design

Study Type
observational
Observational Model
COHORT
Time Perspective
OTHER
Target Duration
5 Years
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Co-Principal Investigator

Study Record Dates

First Submitted

May 25, 2021

First Posted

May 28, 2021

Study Start

December 10, 2020

Primary Completion

December 1, 2025

Study Completion

December 1, 2025

Last Updated

September 19, 2024

Record last verified: 2024-09

Locations

US(7)