Obesity

Pragmatic Implementation of Online Obesity Treatment and Maintenance Interventions in Primary Care: A Randomized Clinical Trial

JAMA Intern MedPublished Randomised controlled trial

Authors' conclusion

Results of this randomized clinical trial indicate that pragmatic implementation of a 12-month automated, online, behavioral obesity treatment that includes 9 months of active maintenance produces clinically significant weight loss over 2 years in primary care patients with overweight or obesity. These findings underscore the importance of providing ongoing maintenance intervention to prevent weight regain.

Study context

Population
Primary care patients aged 18 to 75 years with overweight or obesity referred by their nurse care manager, Rhode Island primary care network, enrolled 2018–2020ITT analysis
Participants
540 patients
Comparison
Monthly or refresher maintenance vs newsletter control maintenance after a 3-month automated online weight loss program (RxWL)
Primary endpoint
Weight change, from electronic medical record height and weight data
Follow-up
12 months
Methodological detailspragmatic, primary care, Data analyzed August 2022 to September 2023
  • Pragmatic
  • Primary care
  • Data analyzed August 2022 to September 2023

Primary result

As reported in the abstract

Weight regained

Monthly and Refresher vs Newsletter control: P = 0.004 · Monthly vs Refresher: difference not statistically significant

Further findings

Weight regain, per-protocol · 12 months

  • Weight regain, per-protocol: per-protocol analysis of 253 participants

Weight loss after initial 3-month program (all participants)

Mean estimated weight loss, kg
3.60 (95% CI, −4.32 to −2.88)
  • Intention-to-treat analysis

Weight regain · 24 months

The 12-month pattern persisted at 24 months

Weight loss after initial 3-month program, per-protocol

Mean weight loss, kg
6.19 (95% CI, −7.25 to −5.13)
  • Per-protocol analysis of 253 participants

Weight regain, per-protocol · 12 months

Less weight regain with Monthly and Refresher than Newsletter control

Original publication

Pragmatic Implementation of Online Obesity Treatment and Maintenance Interventions in Primary Care: A Randomized Clinical Trial. JAMA Intern Med. Published 1 May 2024. doi:10.1001/jamainternmed.2023.8438

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