Clinical trial NCT04907396: International Weight Control Registry
Official title: International Weight Control Registry
Study type: OBSERVATIONAL
Overall status: RECRUITING
Conditions: Weight Loss
Overweight
Obesity
Keywords: Weight Loss Maintenance
Obesity Management
Lead sponsor: Tufts University
Sponsor class: OTHER
Collaborators: name: University of Alabama at Birmingham
name: University of Colorado, Denver
name: University of Kansas Medical Center
name: Pennington Biomedical Research Center
name: University of New Hampshire
name: United States Military Academy West Point
First posted: 2021-05-28
Enrollment: 100000
Sex: ALL
Minimum age (years): 18
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: yes
Observational model: COHORT
Time perspective: OTHER
Sampling method: NON_PROBABILITY_SAMPLE
Study population: Up to 100,000 participants who meet eligibility requirements

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.


Eligibility criteria: Inclusion Criteria:

* 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)

Exclusion Criteria:

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

Primary outcomes:
measure: Percent weight change
timeFrame: 5 Years
Secondary outcomes:
Other outcomes:
Locations:
city: Birmingham
country: United States
facility: University of Alabama at Birmingham
state: Alabama
city: Denver
country: United States
facility: University of Colorado, Denver
state: Colorado
city: Kansas City
country: United States
facility: University of Kansas Medical Center
state: Kansas
city: Baton Rouge
country: United States
facility: Pennington Biomedical Research Center
state: Louisiana
city: Boston
country: United States
facility: Jean Mayer USDA Human Nutrition Research Center on Aging at Tufts University
state: Massachusetts
city: Durham
country: United States
facility: University of New Hampshire
state: New Hampshire
city: West Point
country: United States
facility: United States Military Academy, West Point
state: New York
Study officials:
affiliation: Tufts University
name: Susan B Roberts, PhD
role: PRINCIPAL_INVESTIGATOR
affiliation: University of Alabama at Birmingham
name: James O Hill, PhD
role: PRINCIPAL_INVESTIGATOR
affiliation: Tufts University
name: Sai K Das, PhD
role: STUDY_DIRECTOR
affiliation: University of Alabama at Birmingham
name: Drew Sayer, PhD
role: STUDY_DIRECTOR
References:
citation: 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.