Blinding in Acupuncture Studies with Sham Needles
Author Information
Author(s): Anna Enblom, Anna Johnsson, Mats Hammar, Gunnar Steineck, Sussanne Börjeson
Primary Institution: Linköping University
Hypothesis
Does blinding vary between patients with different characteristics receiving verum or sham acupuncture?
Conclusion
Blinding was successfully achieved irrespective of patient demographics or treatment characteristics.
Supporting Evidence
- Most patients believed they received verum acupuncture regardless of actual treatment.
- Blinding was not influenced by age, gender, or previous acupuncture experience.
- Patients with higher belief in treatment effects were more likely to think they received verum acupuncture.
Takeaway
This study shows that patients often can't tell if they received real or fake acupuncture, which is important for testing how well acupuncture works.
Methodology
Randomized controlled trial comparing verum and sham acupuncture in cancer patients.
Potential Biases
Potential bias from unblinded therapists asking blinding questions.
Limitations
The study relied on self-reported data for blinding, which may introduce bias.
Participant Demographics
Cancer patients aged 22 to 91, mostly with gynecological tumors.
Statistical Information
P-Value
0.003
Confidence Interval
95% CI −0.83–−0.53
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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