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Vibratory stimulation compared to placebo in alleviation of pain
Lundeberg T, Abrahamsson P, Bondesson L, Haker E
Scandinavian Journal of Rehabilitation Medicine 1987;19(4):153-158
clinical trial
4/10 [Eligibility criteria: No; Random allocation: Yes; Concealed allocation: No; Baseline comparability: No; Blind subjects: Yes; Blind therapists: Yes; Blind assessors: No; Adequate follow-up: Yes; Intention-to-treat analysis: No; Between-group comparisons: No; Point estimates and variability: No. Note: Eligibility criteria item does not contribute to total score] *This score has been confirmed*

The placebo effect of vibratory stimulation was studied in 72 patients with chronic pain syndromes in a double-blind crossover trial using a vibrator and a "placebo unit". Pain alleviation was reported by 48% of the patients during vibratory stimulation compared with 34% for placebo treatment; statistical significance (p < 0.005).

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