Validation of a New Sham Acupuncture Needle for Double-Blind Trials: A Study Protocol

Abstract

Background: To establish efficacy in acupuncture treatment, rigorous randomized controlled trials (RCT) are needed. Non-invasive sham acupuncture needles are an effective tool for practitioner/participant blinding. This study presents a protocol for the validation of a newly developed sham acupuncture needle.Methods: A double-blind RCT will be conducted on 66 healthy adults who will be randomly assigned (using computer-generated random numbers) to either the verum (<i>n</i> = 33) or sham (<i>n</i> = 33) acupuncture needle group. The needles will be inserted at 2 acupuncture points: LI4 (upper limb) and ST36 (lower limb). The primary outcome measure is the practitioner/participants belief that they received verum or sham acupuncture. The secondary outcome measures are participant-rated sensations (penetration, pain, and de qi). Adverse events will be recorded with detailed explanations, categorizing occurrences according to related or unrelated to acupuncture. As the newly developed sham acupuncture has not been studied before, an exploratory approach has been adopted. Descriptive statistics, t test, and χ² test will be applied appropriately.Results: This study is intended to provide a protocol for the validation of a sham acupuncture needle by using a double-blind RCT setting, and the results will hopefully contribute to the standardization of the needles used for sham acupuncture. The outcomes aim to determine the reliability of practitioner/participant blinding, participant experience of sensations, and lay groundwork for a standardized control group for clinical trials in the future. The newly developed non-invasive sham acupuncture needle may reduce bias and improve reliability in the size effect of acupuncture treatment.