Obesity

Text Messages With Financial Incentives for Men With Obesity: A Randomized Clinical Trial

JAMAPublished Randomised controlled trial

Authors' conclusion

Among men with obesity, an intervention with text messaging with financial incentive significantly improved weight loss compared with a control group, whereas text messaging alone was not significantly better than the control condition. These findings support text messaging combined with financial incentives to attain weight loss in men with obesity.

Study context

Population
Men with body mass index (BMI) ≥30, Belfast, Bristol and Glasgow areas, UK; mean age 50.7 years, mean BMI 37.7, 90% White; all received weight management information and a pedometer426 completed 12-month follow-up
Participants
585 men
Comparison
Text messages with financial incentives, or text messages alone, vs waiting list control
Primary endpoint
Within-participant % weight change, each intervention vs control (minimum clinically important difference 3%; significance P < .025 per comparison)
Follow-up
12 months
Methodological detailsassessor-blinded, 3 sites (Belfast, Bristol, Glasgow areas, UK), Enrolled July 2021–May 2022; final follow-up June 2023
  • Assessor-blinded
  • 3 sites (Belfast, Bristol, Glasgow areas, UK)
  • Enrolled July 2021–May 2022; final follow-up June 2023

Primary result

As reported in the abstract

Mean % weight change from baseline

Text messaging with financial incentives

−4.8%

mean · SD 6.1%

Text messaging alone

−2.7%

mean · SD 6.3%

Control

−1.3%

mean · SD 5.5%

Mean difference, % (97.5% CI)P value
Text messaging with financial incentivesvs Control
−3.2(−4.6% to −1.9%)
P < 0.001
Text messaging alonevs Controlnot significant (threshold P < .025)
−1.4(−2.9% to 0.0)
P = 0.05

Further findings

Mean, kg

OutcomeText messaging with financial incentivesText messaging aloneControl
Mean weight change · 12 months−5.7 (SD 7.4)−3.0 (SD 7.5)−1.5 (SD 6.6)

Safety

Serious adverse events · percentages are shares of all serious AEs

Serious adverse events — Total serious AEs
23 (6.3%)

Adverse events

Adverse events reported
366
Most common AEs: infections
83 [23%]

Serious adverse events

None considered related to participating in a trial group

Parts of this Brief are withheld: the automatic checks could not confirm them against the abstract.

Original publication

Text Messages With Financial Incentives for Men With Obesity: A Randomized Clinical Trial. JAMA. Published 2 July 2024. doi:10.1001/jama.2024.7064

Composed by AI from the published abstract and checked against it. How Briefs are made →

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