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Acupuncture Therapy in a Group Setting for Chronic Pain

Kligler et al. · Pain Medicine · 2017

📊Quasi-Experimental Study👥n=96 participants🎯Moderate Evidence

Evidence Level

MODERATE
70/ 100
Quality
3/5
Sample
3/5
Replication
4/5
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OBJECTIVE

To test the feasibility and efficacy of group acupuncture for chronic pain

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WHO

Patients with chronic neck, back, shoulder pain or osteoarthritis

⏱️

DURATION

8 weeks of treatment + 16 weeks of follow-up

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POINTS

Individualized points based on palpation + auricular acupuncture

🔬 Study Design

96participants
randomization

Group Acupuncture

n=96

8 weekly group acupuncture sessions with adjunctive techniques

⏱️ Duration: 8 weeks of treatment with 24 weeks of follow-up

📊 Results in numbers

0%

Reduction in pain severity

0%

Reduction in pain interference

0%

Reduction in depression

0%

Patients with ≥30% improvement in pain

0%

Reduction in medication use

Percentage highlights

45%
Reduction in pain severity
48%
Reduction in pain interference
27%
Reduction in depression
58%
Patients with ≥30% improvement in pain
22%
Reduction in medication use

📊 Outcome Comparison

Pain Severity (0-10)

Baseline
4.92
24 weeks
2.72

Pain Interference (0-10)

Baseline
3.59
24 weeks
1.87
💬 What does this mean for you?

This study showed that acupuncture delivered in a group setting can be an effective and more accessible alternative for treating chronic pain. Patients experienced significant pain reduction that was sustained for months after treatment, suggesting that this approach can make acupuncture more available to people with limited resources.

📝

Article summary

Plain-language narrative summary

This pioneering study investigated whether acupuncture delivered in a group setting could be a feasible and effective alternative to traditional individual treatment for patients with chronic pain. The research was motivated by the need to make acupuncture more accessible, especially for low-income populations who face financial barriers to accessing individual care. Researchers recruited 113 participants from primary care clinics in New York City, of whom 96 completed the 24-week protocol. Participants had chronic pain of at least three months' duration in the neck, back, shoulder, or osteoarthritis.

The study used a quasi-experimental design with multiple measurements, including a pre-treatment observation period to establish baseline pain levels. The intervention consisted of eight weekly group acupuncture sessions held in a clinic waiting room after hours. Each session accommodated up to eight patients and lasted 40 to 60 minutes per person. The treatment protocol was developed through a modified Delphi process by experienced acupuncturists and included not only needling but also complementary techniques such as Tui Na (Chinese therapeutic massage), Gua Sha (scraping technique), and auricular acupuncture.

Acupuncture points were selected individually based on each patient's presentation and palpation, allowing personalization within the group setting. The results were impressive and sustained. Pain severity decreased significantly from 4.92 points at baseline to 2.72 points at 24 weeks, representing a 45% reduction. Pain interference with daily life also improved substantially, falling from 3.59 to 1.87 points.

More than half of patients (57.8%) experienced a clinically meaningful reduction of at least 30% in pain severity. Depressive symptoms, measured by the CES-D scale, also decreased significantly from 13.47 to 9.79 points. A particularly notable finding was that benefits not only persisted but continued to improve up to 16 weeks after treatment ended, despite no additional intervention. The number of pain-free days in the preceding two weeks increased from 1.4 to 4.8 days.

Additionally, there was a significant reduction in pain medication use, with the proportion of patients using analgesics falling from 87% to 65% by the end of the study. From a safety standpoint, no serious adverse events were reported, only occasional minor side effects such as needle-site irritation and post-treatment fatigue. The clinical implications are substantial. This study demonstrates that group acupuncture can be an effective strategy for expanding access to acupuncture treatment for underserved populations while maintaining therapeutic efficacy.

The group model allows significant cost reduction while preserving the individual benefits of treatment. The sustained effect for months after treatment suggests that relatively short cycles of group acupuncture can provide durable relief. This is especially important considering that chronic pain disproportionately affects low-income populations and ethnic minorities, who often have limited access to effective treatments. The study also validates the integrative approach combining acupuncture with complementary techniques from traditional Chinese medicine, suggesting that holistic protocols can be effectively implemented in group settings.

Strengths

  • 1Design with multiple baseline measurements to control for pain variability
  • 2Extended 24-week follow-up demonstrating persistence of effects
  • 3Standardized protocol developed by expert consensus
  • 4High retention rate (85%) and absence of serious adverse events
  • 5Innovative approach to increasing access to acupuncture
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Limitations

  • 1Absence of a control group limiting conclusions about causality
  • 2Inadequate data collection on medication use
  • 3Possible selection bias with a predominantly educated population
  • 4Lack of blinding of participants and assessors
  • 5Limited generalizability to other populations and settings
Dr. Marcus Yu Bin Pai

Expert Commentary

Dr. Marcus Yu Bin Pai

MD, PhD · Pain Medicine · Physical Medicine and Rehabilitation · Medical Acupuncture

Clinical Relevance

Group acupuncture represents a concrete response to the access bottleneck that any medium-to-high-volume pain service faces day to day. In this work, 96 patients with chronic musculoskeletal pain — neck, spine, shoulder, and osteoarthritis — completed eight weekly sessions and were followed for 24 weeks, with reductions of 45% in severity and 48% in pain interference. For the physiatrist managing extensive waiting lists, these numbers establish an acceptable efficacy floor to justify structuring therapeutic groups. The 22% reduction in analgesic use is clinically relevant in a context where polypharmacy in chronic pain patients generates additional risks of gastrointestinal, renal, and dependence-related events. Populations with low surgical resolution potential, comorbidities that contraindicate pharmacological escalation, or a history of insufficient response to conventional physical therapy are natural candidates for this model.

Notable Findings

Two findings deserve special attention. First, the temporal trajectory of benefits: improvements did not plateau at the end of the eight weeks — they continued to advance through week 16 post-treatment, without any additional intervention. This neurobiological 'carry-over' phenomenon is consistent with what we know about neuroplasticity and descending pain modulation, and has direct implications for planning maintenance protocols. Second, the increase in pain-free days from 1.4 to 4.8 in the two weeks preceding the final assessment is a patient-centered outcome with immediate functional translation — nearly tripling functional days. The 27% reduction in depressive symptoms measured by CES-D reinforces the argument that chronic pain treatment requires an approach that addresses the affective component, and that acupuncture appears to act on this dimension in a non-negligible way, likely via modulation of the limbic-hypothalamic axis.

From My Experience

At the Pain Center, I have used group sessions for low-to-moderate complexity musculoskeletal conditions for several years, and the pattern I observe is quite consistent with this work: the initial response usually appears between the third and fourth session, with the patient reporting improvement in sleep and mobility before even verbalizing pain reduction. For maintenance, I typically work with cycles of eight to ten sessions, followed by monthly follow-ups in the first three months. The protocol I associate with the best results combines systemic acupuncture with dry needling of active trigger points — especially in chronic low back pain with a myofascial component — and supervised therapeutic exercise. The patient profile that responds best to the group model is one with predominantly musculoskeletal pain, without dominant central neuropathic component, and with good adherence to collective treatment. Patients with intense central sensitization or poorly controlled anxiety disorders tend to benefit more from the individual setting, at least in the initial sessions.

PhD in Health Sciences, University of São Paulo. Board-certified in Pain Medicine, Physical Medicine and Rehabilitation, and Medical Acupuncture.

Full original article

Read the full scientific study

Pain Medicine · 2017

DOI: 10.1093/pm/pnx134

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Scientific Review

Marcus Yu Bin Pai, MD, PhD

Marcus Yu Bin Pai, MD, PhD

CRM-SP: 158074 | RQE: 65523 · 65524 · 655241

PhD in Health Sciences, University of São Paulo. Board-certified in Pain Medicine, Physical Medicine and Rehabilitation, and Medical Acupuncture. Scientific review and curation of every entry in this library.

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Medical disclaimer: This content is for educational purposes only and does not replace consultation, diagnosis, or treatment by a qualified professional. Some information may be assisted by artificial intelligence and is subject to inaccuracies. Always consult a physician.

Content reviewed by the medical team at CEIMEC — Integrated Centre for Chinese Medicine Studies, a reference in Medical Acupuncture for over 30 years.