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STUDIES ON
CHIROPRACTIC
Effectiveness & Cost-Effectiveness of Chiropractic
Few (if any) other health care
interventions have been assessed as extensively as chiropractic spinal manipulation,
both in terms of safety and effectiveness. Furthermore, few other health care
professions have been as thoroughly researched as chiropractic.
There have been at least six formal government inquiries into chiropractic worldwide
over the last 25 years (including Canada, Australia, New Zealand and Sweden).
All have concluded that contemporary chiropractic care is safe, effective,
cost-effective and have recommended public funding for chiropractic services.
In addition to government inquiries, there have been many scientific
clinical studies (randomized controlled trials included) assessing
the appropriateness, effectiveness and/or cost-effectiveness of
spinal manipulation or chiropractic manipulation (most notably for
back pain).
Meade, T.W., Dyer, S.,
Browne, W., Townsend, J., Fran, A.O. (1990 & 1995) Randomized Comparison of
Chiropractic and Hospital Outpatient Management for Low Back Pain, British
Medical Journal.
In 1990, this widely reported
randomized controlled trial conducted by the British Medical Research Council
compared chiropractic and hospital outpatient treatment for managing low back
pain of mechanical origin. The investigators concluded that chiropractic treatment
almost certainly confers worthwhile, long-term benefit in comparison with hospital
outpatient management. They also related that consideration should be given to
providing chiropractic coverage within the National Health System and in hospitals.
BMJ, Vol 300, pp. 1431-37.
A follow-up study was published in the British Medical Journal in 1995,
which presents the full results and concludes that "at three years,
the results confirm the findings of an earlier report that when
chiropractic or hospital therapists treat patients with low back
pain, as they would in day to day practice, those treated by chiropractic
derive more benefit and long-term satisfaction than those treated
by hospitals". BMJ, Vol 311, pp. 349-51.
Shekelle,
P.G., Adams, A.H., Chassin, M.R., Hurwitz, E.I., Phillips, R.B., Brook, R.H.
(1991) "The Appropriateness of Spinal Maniplation for Low Back Pain. Project
Overview and Literature Review", Rand, Santa Monica, California.
Rand, a prestigious
research organization in the US, released a report on the appropriateness of
spinal manipulation for low back pain. On the efficacy of spinal manipulation
for low back pain, although the investigators found that the literature on this
subject is of uneven quality, they concluded that "support is consistent for the
use of spinal manipulation as a treatment for patients with acute low back pain
and an absence of other signs or symptoms of lower limb nerve root involvement".
Ebrall, P.S. (1992) "Mechanical Low Back Pain: A comparison of Medical and
Chiropractic Management Within the Victorian WorkCare Scheme", Chiropractic
Journal of Australia, Vol. 22 (2), pp. 47-53.
This was a retrospective
study of all work-related low back pain claimants within a twelve-month period
in Victoria, Australia, drawing on the database of the Victoria Accident
Compensation Commission and comparing costs of outcomes between chiropractic
and medical care. The study found that: 1) there was a significantly lower
number of claimants requiring compensation days when chiropractic management
was chosen; 2) there were fewer compensation days taken by claimants who received
chiropractic management; 3) a greater number of patients progressed to chronic
status when medical management was chosen and; 4)there was a greater average
payment per claim with medical management ($2308.10) versus chiropractic
management ($963.47).
The investigator concluded that if the Victorian chiropractors managed
up to 40% of low back pain cases (substituting medical care) then
the direct savings within the Victorian WorkCare scheme for the
study period would have been $10 million over 7,482 claims.
Manga, P, Angus D., Papadopoulos, C., Swan, W. (1993) The Effectiveness
and Cost-Effectiveness of Chiropractic Management of Low Back Pain, Kenilworth
Publishing, Ottawa.
In 1993, the Ontario Ministry
of Health commissioned and funded a study to examine the effectiveness and
cost-effectiveness of chiropractic management of low back pain. The report
concluded that there is an overwhelming body of evidence indicating that
chiropractic management of low back pain is the most cost-effective, and that
there would be highly significant cost savings if more management of low back
pain was transferred to chiropractors. This report also recommended that there
should be a shift in policy to encourage chiropractic services for most patients
with low back pain and that chiropractic services should be fully insured under
the Ontario Health Insurance Plan.
Stano, M., Smith, M. (1996) "Chiropractic and Medical Costs of Low Back Pain",
Medical Care, Vol. 34(3), pp. 191-204
This study compared health
insurance payments and utilization for episodes of care for common low back
conditions treated by chiropractic and medical providers, using 2 years of
insurance claims data. The mean total payments were lower for chiropractic
care ($518) versus medical care ($1020) as were the mean total outpatient
payments ($477 versus $598). The authors concluded that the lower costs for
episodes in which chiropractors serve as initial contact providers along with
the favourable satisfaction and quality indicators suggests that chiropractic
deserves careful consideration in gate keeper strategies adopted by employers
and third-party payers to control health care spending.
Mosley, C.D., Ilana, G.C., Arnold, R.M. (1996) "Cost-Effectiveness of
Chiropractic in a Managed Care Setting", The American Journal of Managed Care,
Vol. 2, pp. 280-282.
The authors of this
study retrospectively evaluated the cost of health care for back
and neck pain (using ICD-9 codes) for members of a health maintenance
organization who sought chiropractic care in 1994-1995. In addition,
differences between the groups in surgical rate, the use of diagnostic
imaging and patient satisfaction were compared. The cost of healthcare
for back and neck pain was substantially lower for chiropractic
patients ($539 versus $774)). The authors concluded that properly
managed chiropractic care can yield outcomes, in terms of surgical
requirements and patient satisfaction, that are equal to those of
non-chiropractic care at a substantially lower cost per patient.
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