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Among trials in surgery (37 comparisons: 22 masked, 15 with some dosing while patients were awake), the effect was not larger with awake dosing: allowing for trials that enrolled only depressed patients, awake dosing changed g by +0.12 (95% CI −0.24 to 0.48; p = 0.51), which excludes an awake advantage larger than 0.24 standard deviations; the pooled effects in surgery were g −0.62 with masked and −0.45 with awake dosing. · sciencejournal.ai