Open-Label Placebo Injection for Chronic Back Pain With Functional Neuroimaging: A Randomized Clinical Trial.

fMRI Findings Evoked Back Pain Analyses Open-label placebo vs usual care led to reduced pain ratings in the back pain evocation task with marginal significance (β = −6.97 on the 0- to 100-point pain scale; t [78] = −1.84; P = .07).

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