The British journal of general practice : the journal of the Royal College of General Practitioners
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Randomized Controlled Trial Comparative Study
Which weight-loss programmes are as effective as Weight Watchers(R)?: non-inferiority analysis.
Three randomised controlled trials have provided strong evidence that Weight Watchers(®) is an effective weight-loss programme but there is insufficient evidence to determine whether three other weight-loss programmes are also effective. ⋯ In the short term all commercial weight-loss programmes appear to result in similar weight loss but the NHS alternative appears to produce less weight loss. At 12 months Slimming World led to greater weight loss but the differences between commercial programmes was small and of minor clinical importance.