Index to Chiropractic Literature
Index to Chiropractic Literature
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ID 499
Title Preliminary study of the effects of a placebo chiropractic treatment with sham adjustments
Journal J Manipulative Physiol Ther. 1999 Sep;22(7):436-443
Peer Review Yes
Publication Type Article
Abstract/Notes OBJECTIVE: To identify aspects of the delivery of placebo chiropractic treatments by using sham adjustments that may cause a treatment effect and that may affect the success of blinding.

DESIGN AND SETTING: Two-period crossover design in a chiropractic college research clinic.

SUBJECTS: Eighteen volunteer staff, students, and faculty of the chiropractic college who reported low-back pain within the last 6 months.

INTERVENTIONS: Flexion-distraction technique was used to perform chiropractic adjustments, and a hand-held instrument (Activator adjusting instrument) with the pressure gauge set on the 0 was used to perform sham adjustments. The treatment period was 2 weeks, with a total of 4 visits.

MAIN OUTCOME MEASURES: The Visual Analog Scale (VAS) for pain and Global Well-Being Scale (GWBS).

RESULTS: Although VAS and GWBS scores improved with both treatments, a somewhat greater improvement occurred in most cases with the active treatment. Eight of 14 patients interviewed believed that the placebo had a treatment effect.

CONCLUSION: This study provided preliminary information that was useful in planning the protocol for a placebo chiropractic treatment in the randomized clinical trial for which it was designed.

Click on the above link for the PubMed record for this article; full text by subscription.

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