Weight outcomes audit for 34,271 adults referred to a primary care/commercial weight management partnership scheme

R J Stubbs, C Pallister, S Whybrow, A Avery, J Lavin

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Objective: This project audited rate and extent of weight loss in a primary care/commercial weight management organisation partnership scheme. Methods: 34,271 patients were referred to Slimming World for 12 weekly sessions. Data were analysed using individual weekly weight records. Results: Average (SD) BMI change was –1.5 kg/m2 (1.3), weight change –4.0 kg (3.7), percent weight change –4.0% (3.6), rate of weight change –0.3 kg/week, and number of sessions attended 8.9 (3.6) of 12. For patients attending at least 10 of 12 sessions (n = 19,907 or 58.1%), average (SD) BMI change was –2.0 kg/m2 (1.3), weight change –5.5 kg (3.8), percent weight change –5.5% (3.5), rate of weight change –0.4 kg/week, and average number of sessions attended was 11.5 (0.7) (p < 0.001, compared to all patients). Weight loss was greater in men (n = 3,651) than in women (n = 30,620) (p < 0.001). 35.8% of all patients enrolled and 54.7% in patients attending 10 or more sessions achieved at least 5% weight loss. Weight gain was prevented in 92.1% of all patients referred. Attendance explained 29.6% and percent weight lost in week 1 explained 18.4% of the variance in weight loss. Conclusions: Referral to a commercial organisation is a practical option for National Health Service (NHS) weight management strategies, which achieves clinically safe and effective weight loss.
Original languageEnglish
Pages (from-to)113-20
Number of pages8
JournalObesity Facts
Issue number2
Publication statusPublished - Apr 2011



  • adult
  • body mass index
  • commerce
  • female
  • health behavior
  • health promotion
  • humans
  • male
  • medical audit
  • middle aged
  • obesity
  • patient compliance
  • primary health care
  • referral and consultation
  • sex factors
  • social support
  • treatment outcome
  • weight gain
  • weight loss

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