Acupuncture for Migraine Prophylaxis
(2017)Objective
Acupuncture - To evaluate the long-term effects of true acupuncture vs sham acupuncture and waiting list on migraine prophylaxis in patients with migraine without aura.
Study Summary
• Benefit persisted through 24 weeks of follow-up
• Pain intensity and migraine days also improved significantly
Intervention
249 patients randomized to 4 weeks of daily true acupuncture, sham acupuncture, or waiting list (control), followed by 20 weeks of observation. Electroacupuncture used at specified acupoints for 20 sessions.
Inclusion Criteria
• Age 18–65
• Migraine without aura for ≥1 year
• 2–8 attacks/month
• Onset before age 50
• Completed baseline headache diary
Study Design
Arms: True acupuncture vs sham acupuncture vs waiting list
Patients per Arm: 83 TA, 80 SA, 82 WL
Outcome
• Migraine days: 2.1 (TA) vs 3.1 (SA) vs 3.8 (WL) at 13–16 weeks
• VAS pain scores: 3.4 (TA) vs 4.2 (SA) vs 4.9 (WL) at 13–16 weeks
Bottom Line
True acupuncture significantly reduced migraine attack frequency, pain intensity, and migraine days compared to sham acupuncture and no treatment, with effects persisting at 24 weeks.
Major Points
- True acupuncture was not significantly more effective than sham acupuncture for migraine prevention.
- Both true and sham acupuncture significantly reduced migraine days vs waitlist control (~2 fewer days/month).
- ~300 patients randomized 3-arm: true acupuncture, sham acupuncture, waitlist. German multicenter.
- Primary: migraine days at weeks 9-12. True: -2.2; Sham: -1.5; Waitlist: -0.8.
- True vs sham: -0.7 days difference (P=NS). Both vs waitlist: P<0.05.
- 12 treatments over 8 weeks. Standardized acupuncture vs non-penetrating sham needles.
- Large nonspecific/placebo component explains sham acupuncture effectiveness.
- Published JAMA 2005 (Linde et al.). German Research Foundation funded.
- Influenced migraine guidelines: acupuncture recommended based on this and similar trials.
- Key finding: therapeutic ritual and patient expectation drive much of acupuncture's benefit.
Study Design
- Study Type
- Multicenter, randomized, assessor-blinded clinical trial
- Randomization
- Yes
- Blinding
- Outcome assessors and statisticians were blinded; patients blinded to true vs sham
- Sample Size
- 249
- Follow-up
- 24 weeks (4 weeks treatment + 20 weeks follow-up)
- Centers
- 7
- Countries
- China
Primary Outcome
Definition: Change in migraine attack frequency (baseline vs weeks 13–16)
| Control | Intervention | HR/OR | P-value |
|---|---|---|---|
| −1.4 (waiting list) | −3.2 (true acupuncture), −2.1 (sham) | - (Significant between-group differences) | <0.001 |
Limitations & Criticisms
- Relatively short treatment period (4 weeks) despite long follow-up
- Placebo effect possible despite sham control
- Study limited to Chinese population; generalizability unclear
- Waiting list control may inflate effect size
Citation
JAMA Intern Med. 2017;177(4):508–515. doi:10.1001/jamainternmed.2016.9378