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Fig. 4 | BMC Psychiatry

Fig. 4

From: Comparative efficacy of placebos in short-term antidepressant trials for major depression: a secondary meta-analysis of placebo-controlled trials

Fig. 4

Correlation between drug-efficacy and placebo-efficacy. Scatter plot illustrating the correlation between drug and placebo efficacy on the standardized mean difference (SMD) scale. Circle size is proportionate to mean trial size (logarithm). Zero indicates no effect compared to the reference (VENVORp). The Pearson correlation was small and insignificant (r = − 0.202, p = 0.408)

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BMC Psychiatry

ISSN: 1471-244X

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