Last reviewed · How we verify
NCT03571893
Study of an International Commercial Program on Weight Loss and Health Outcomes
NA trial testing Weight Watchers Freestyle (Flex) in Weight Loss in 373 participants. Completed in 4 November 2019.
4 November 2019
Quick facts
| Lead sponsor | University of North Carolina, Chapel Hill |
|---|---|
| Phase | NA |
| Status | Completed |
| Study type | INTERVENTIONAL |
| Allocation | randomized |
| Design | parallel |
| Masking | single |
| Primary purpose | treatment |
| Enrollment | 373 |
| Start date | 19 June 2018 |
| Primary completion | 4 November 2019 |
| Estimated completion | 4 November 2019 |
| Sites | 4 locations across United Kingdom, Canada, United States |
Drugs / interventions tested
- Weight Watchers Freestyle (Flex)
- DIY Personal Plan
Conditions studied
- Weight Loss — all drugs for Weight Loss →
- Weight Change, Body — all drugs for Weight Change, Body →
- Obesity — all drugs for Obesity →
- Diet Modification — all drugs for Diet Modification →
Sponsor
University of North Carolina, Chapel Hill
Who can join
Adults 18 to 75, any sex, with Weight Loss or Weight Change, Body. Patients with the condition only — healthy volunteers not accepted.
Sponsor's own description
This study is a randomized controlled trial (RCT) of the Weight Watchers (WW) Freestyle ® (Flex® in UK) weight loss program compared to a control group following a do-it-yourself (DIY) approach for 12 months. Participants in the United States, Canada and the UK (n=360 total) will be randomly assigned to either participate in the commercially available WW program in their local community or to follow their own approach for weight loss. This study will examine the impact of the WW program on weight, fitness levels, quality of life, health behaviors and other health outcomes in overweight and obese adults after 3 and 12 months.
Publications & conference data
1 peer-reviewed publication reference this trial (live from Europe PMC):
-
Efficacy of a Commercial Weight Management Program Compared With a Do-It-Yourself Approach: A Randomized Clinical Trial.
Tate DF, Lutes LD, Bryant M, Truesdale KP, et al · · 2022 · cited 14× · PMID 35972742 · DOI 10.1001/jamanetworkopen.2022.26561
Verify or expand the search:
- PubMed search for NCT03571893
- Europe PMC full search
- ASCO Meeting Library
- ESMO Meeting Library
- bioRxiv preprints
- medRxiv preprints
- Google Scholar
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Other University of North Carolina, Chapel Hill trials
Trials by the same sponsor.
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Verify against primary sources
- ClinicalTrials.gov — authoritative US registry record
- WHO ICTRP — international registry index
- EU Clinical Trials Register
- Sponsor press releases (Google)
- Trial protocol + status: ClinicalTrials.gov NCT03571893 (US National Library of Medicine, public domain)
- Publications: Europe PMC API search by NCT ID, retrieved 10 June 2026
- Drug + disease cross-links: matched in real time against Drug Landscape's normalised drug + company + condition tables
- Sponsor: as reported to ClinicalTrials.gov by University of North Carolina, Chapel Hill
- Last refreshed: 13 March 2020
Drug Landscape aggregates and links these public records for informational use only. Always verify against the primary source before clinical or regulatory decisions. Canonical URL: https://druglandscape.com/trial/NCT03571893.
Primary sources · FDA · ClinicalTrials.gov · EMA · SEC EDGAR · ChEMBL · Wikidata · full sourcing