Research
Adherence
First-week weight loss is a strong predictor of total 3-month weight loss, accounting for 11.3% of variance independently of attendance.
If you lose weight in your first week, it's a good sign you will succeed, but don't quit if you don't. Total attendance over 3 months is the most important factor.
StrongSupportsHIGH confidence
Percent weight lost during the first week of attendance was also an important predictor of total weight lost, accounting for 11.3 % of the variance.
Why this rating
Large sample size and robust regression analysis.
Source
Weight outcomes audit in 1.3 million adults during their first 3 months’ attendance in a commercial weight management programme
R. James Stubbs et al. · BMC Public Health · 2015
DOI 10.1186/s12889-015-2225-0
cohort · n=1356105Cited 66×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
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This is one finding among thousands. Every one is graded and traced to its source, so you can see what the evidence actually supports. Browse the research →