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Randomised controlled trial and economic evaluation of a task-based weight management group programme.

Hayden McRobbie1, Peter Hajek1, Sarrah Peerbux1

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A new weight management program (WAP) showed better results than standard care for obese adults, leading to greater weight loss and cost-effectiveness. This effective, economical intervention reaches disadvantaged communities.

Keywords:
Cost-effectivenessObesityWeight lossWeight management

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Area of Science:

  • Public Health
  • Clinical Trials
  • Obesity Research

Background:

  • Obesity presents a significant global health challenge and exacerbates health inequalities.
  • There is a critical need for effective, economical weight management programs accessible to underprivileged populations.
  • This study compares a novel multi-modal group intervention (WAP) with standard primary care interventions for disadvantaged communities.

Purpose of the Study:

  • To evaluate the one-year effectiveness of the Weight Action Programme (WAP) compared to primary care nurse intervention (PNI).
  • To assess the cost-effectiveness of WAP for the National Health Service (NHS).

Main Methods:

  • A randomized controlled trial involving 330 obese adults allocated to either WAP (n=221) or PNI (n=109).
  • Both interventions included diet, physical activity, and self-monitoring over eight weeks.
  • The primary outcome was change in weight at 12 months; cost-effectiveness analysis included Quality-Adjusted Life-Years (QALYs).

Main Results:

  • WAP resulted in significantly greater weight loss (-4.2 kg) compared to PNI (-2.3 kg) at 12 months (P=0.04).
  • More participants in the WAP group achieved at least 5% weight loss (41% vs. 27%, P=0.004).
  • WAP demonstrated high cost-effectiveness with an incremental cost-effectiveness ratio of £7742/QALY.

Conclusions:

  • The task-based Weight Action Programme (WAP) is an effective and economical weight management strategy.
  • WAP demonstrates potential as a scalable model for reaching clients from disadvantaged communities.
  • This intervention offers a valuable approach to addressing obesity and health inequalities.