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Fig. 2 | Trials

Fig. 2

From: A meta-analysis of temporal changes of response in the placebo arm of surgical randomized controlled trials: an update

Fig. 2

Meta-analysis of placebo response across all the trials, by outcome type. Top panels shows data for individual trials. Bottom panels shows meta-analysis by trial type. Left panels show analysis across all time points. Right panels show analysis across all visits. A separate model was fitted for each outcome type. The thick line refers to the study average trend over time, i.e., the fixed effect part of the models. The shaded area is the 95% confidence interval. The thick grey dashed line represents the line of null effect

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