My own curve sits about four points below the published mean and I spent two months assuming that meant something was wrong with me or with my material.
So the question, as narrowly as I can put it: how to read a result like this without either dismissing it or over-reading it, since the summaries all read like press releases.
I would rather have one careful answer than five confident ones.
This one has a reasonably settled answer, so here it is. Relative and absolute effects need reading together. A 20% relative reduction on a high baseline risk is a large absolute benefit; the same relative figure on a low baseline risk is a small one, and press summaries almost always quote the relative number because it is bigger.
Happy to go further on any of that.
PeptideChemSF said:Relative and absolute effects need reading together.
Bayesian meta-analysis perspective on the trial evidence: traditional frequentist meta-analyses report point estimates and confidence intervals. Bayesian approaches provide probability distributions that are more intuitive for clinical decision-making.
For example: "There is a 98.5% probability that semaglutide 2.4mg produces >10% weight loss vs placebo" is more actionable than "RR 3.4, 95% CI 2.8-4.1, p<0.001."
The the trial evidence evidence is strong under both frameworks, but Bayesian analysis better communicates the degree of certainty for individual patient counseling.
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View ResultsTrialNerd_Beth said:My own curve sits about four points below the published mean and I spent two months assuming that meant something was wrong with me or with my…
Same position here, arrived at the long way round. The gap between trial results and real-world results is consistent and it is not fraud. Trial participants get titration by protocol, scheduled contact, free drug and dietetic support; removing that infrastructure costs a few percentage points every time it has been measured. When your own curve sits below the published mean, that is the likeliest explanation before anything about you or your material.
From the other side of the consultation, briefly.
Forest plot interpretation for the the trial evidence meta-analysis: when reading the pooled estimate, pay attention to:
The the trial evidence meta-analysis shows a pooled RR of 0.81 (95% CI 0.67-0.86), I²=54%. This is a robust and consistent effect.