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  • Title: Cost-effectiveness of acupuncture care as an adjunct to exercise-based physical therapy for osteoarthritis of the knee.
    Author: Whitehurst DG, Bryan S, Hay EM, Thomas E, Young J, Foster NE.
    Journal: Phys Ther; 2011 May; 91(5):630-41. PubMed ID: 21415230.
    Abstract:
    BACKGROUND: The delivery of acupuncture alongside mainstream interventions and the cost-effectiveness of "alternative" treatments remain areas of controversy. OBJECTIVE: The aim of this study was to assess the cost-utility of adding acupuncture to a course of advice and exercise delivered by UK National Health Service (NHS) physical therapists to people with osteoarthritis of the knee. DESIGN: A cost-utility analysis was performed alongside a randomized controlled trial. METHODS: A total of 352 adults (aged 50 years or older) were randomly assigned to receive 1 of 3 interventions. The primary analysis focused on participants receiving advice and exercise (AE) or advice and exercise plus true acupuncture (AE+TA). A secondary analysis considered participants receiving advice and exercise plus nonpenetrating acupuncture (AE+NPA). The main outcome measures were quality-adjusted life years (QALYs), measured by the EQ-5D, and UK NHS costs. RESULTS: were expressed as the incremental cost per QALY gained over 12 months. Sensitivity analyses included a broader cost perspective to incorporate private out-of-pocket costs. Results NHS costs were higher for AE+TA (£314 [British pounds sterling]) than for AE alone (£229), and the difference in mean QALYs favored AE+TA (mean difference=0.022). The base-case cost per QALY gained was £3,889; this value was associated with a 77% probability that AE+TA would be more cost-effective than AE at a threshold of £20,000 per QALY. Cost-utility data for AE+NPA provided cost-effectiveness estimates similar to those for AE+TA. LIMITATIONS: As with all trial-based economic evaluations, caution should be exercised when generalizing results beyond the study perspectives. CONCLUSIONS: A package of AE+TA delivered by NHS physical therapists provided a cost-effective use of health care resources despite an associated increase in costs. However, the economic benefits could not be attributed to the penetrating nature of conventional acupuncture; therefore, further research regarding the mechanisms of acupuncture is needed. An analysis of alternative cost perspectives suggested that the results are generalizable to other health care settings.
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