Trial reportJournal of the National Cancer Institute. Monographs2014
Expectancy in real and sham electroacupuncture: does believing make it so?
Trial report in Journal of the National Cancer Institute. Monographs, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers, 2 of them syntheses that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
24 citing papers in PubMed, 2 syntheses or guidelines pooled it, 36 citations in OpenAlex.
- Expectancy Effect of Acupuncture on Cancer-Related Outcomes: A Systematic Review.Oncology nursing forum · 2024Pooled it
- Effects of Acupuncture on Breast Cancer Patients Taking Aromatase Inhibitors.BioMed research international · 2022Pooled it
- Music Therapy Versus Cognitive Behavioral Therapy via Telehealth for Anxiety in Survivors of Cancer: A Randomized Clinical Trial.Journal of clinical oncology : official journal of the American Society of Clinical Oncology · 2026Trial
- Treatment expectations and pain-related outcomes in clinical trials of digital cognitive-behavioral therapy for youth with chronic pain.The journal of pain · 2025Trial
- Does expectancy affect insomnia treatment response in cancer survivors receiving acupuncture and cognitive behavioral therapy?Journal of cancer survivorship : research and practice · 2023Trial
- Health-Related Quality of Life in Cancer Survivors with Chemotherapy-Induced Peripheral Neuropathy: A Randomized Clinical Trial.The oncologist · 2021Trial
- Yoga for cancer survivors with chemotherapy-induced peripheral neuropathy: Health-related quality of life outcomes.Cancer medicine · 2021Trial
- Electroacupuncture and splinting versus splinting alone to treat carpal tunnel syndrome: a randomized controlled trial.CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne · 2016Trial
- Randomized sham-controlled pilot trial of weekly electro-acupuncture for the prevention of taxane-induced peripheral neuropathy in women with early stage breast cancer.Breast cancer research and treatment · 2016Trial
- Electroacupuncture Versus Gabapentin for Hot Flashes Among Breast Cancer Survivors: A Randomized Placebo-Controlled Trial.Journal of clinical oncology : official journal of the American Society of Clinical Oncology · 2015Trial
- Impact of Baseline Expectancy on Outcome Prediction of Real and Sham Acupuncture for Persistent Chemotherapy-Induced Peripheral Neuropathy Pain in Solid Tumor Survivors: A Secondary Analysis of a Randomized Clinical Trial.Integrative cancer therapiesTrial
- How does pretreatment expectancy influence pain outcomes with electroacupuncture and battlefield acupuncture in cancer survivors?: Pretreatment expectancy and pain reduction by acupuncture.Integrative medicine research · 2024Article
- Telehealth-Based Music Therapy Versus Cognitive Behavioral Therapy for Anxiety in Cancer Survivors: Rationale and Protocol for a Comparative Effectiveness Trial.JMIR research protocols · 2023Article
- Expectations for Improvement: A Neglected but Potentially Important Covariate or Moderator for Chronic Pain Clinical Trials.The journal of pain · 2023Article
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- Acupuncture for cancer pain: protocol for a pilot pragmatic randomised controlled trial.BMJ open · 2019Article
- The National Cancer Institute's Conference on Acupuncture for Symptom Management in Oncology: State of the Science, Evidence, and Research Gaps.Journal of the National Cancer Institute. Monographs · 2017Article
- Nonspecific Feelings Expected and Experienced during or Immediately after Electroacupuncture: A Pilot Study in a Teaching Situation.Medicines (Basel, Switzerland) · 2017Article
- Expectancy after the first treatment and response to acupuncture for menopausal hot flashes.PloS one · 2017Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
8 authors at 2 institutions in 1 country.
Funding
Abstract
backgroundThe large placebo effect observed in prior acupuncture trials presents a substantial challenge for interpretation of the efficacy of acupuncture. We sought to evaluate the relationship between response expectancy, a key component of the placebo effect over time, and treatment outcome in real and sham electroacupuncture (EA).
methodsWe analyzed data from a randomized controlled trial of EA and sham acupuncture (SA) for joint pain attributable to aromatase inhibitors among women with breast cancer. Responders were identified using the Patient Global Impression of Change instrument at Week 8 (end of intervention). The Acupuncture Expectancy Scale (AES) was used to measure expectancy four times during the trial. Linear mixed-effects models were used to evaluate the association between expectancy and treatment response.
resultsIn the wait list control group, AES remained unchanged over treatment. In the SA group, Baseline AES was significantly higher in responders than nonresponders (15.5 vs 12.1, P = .005) and AES did not change over time. In the EA group, Baseline AES scores did not differ between responders and nonresponders (14.8 vs 15.3, P = .64); however, AES increased in responders compared with nonresponders over time (P = .004 for responder and time interaction term) with significant difference at the end of trial for responders versus nonresponders (16.2 vs 11.7, P = .004).
conclusionsBaseline higher response expectancy predicts treatment response in SA, but not in EA. Divergent mechanisms may exist for how SA and EA influence pain outcomes, and patients with low expectancy may do better with EA than SA.
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What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.