8. 先行研究
72020/1/31
Original Study
Economic Evaluation of a Multifactorial, Interdisciplinary
Intervention Versus Usual Care to Reduce Frailty in Frail
Older People
Nicola Fairhall PhD a
, Catherine Sherrington PhD b
, Susan E. Kurrle MBBS, PhD c
,
Stephen R. Lord PhD d
, Keri Lockwood BHSci c
, Kirsten Howard PhD e
, Alison Hayes PhD e
,
Noeline Monaghan MSc, Dip Law a
, Colleen Langron MHSci c
, Christina Aggar PhD f
,
Ian D. Cameron MBBS, PhD a,
*
a
Rehabilitation Studies Unit, Faculty of Medicine, The University of Sydney, Sydney, Australia
b
The George Institute for Global Health, The University of Sydney, Sydney, Australia
c
Rehabilitation and Aged Care Services, Hornsby Ku-ring-gai Hospital, Sydney, Australia
d
Neuroscience Research Australia, University of New South Wales, Sydney, Australia
e
Sydney School of Public Health, Faculty of Medicine, The University of Sydney, Sydney, Australia
f
Faculty of Nursing and Midwifery, The University of Sydney, Sydney, Australia
Keywords:
Frailty
randomized controlled trial
cost-effectiveness
a b s t r a c t
Objective: To compare the costs and cost-effectiveness of a multifactorial interdisciplinary intervention
versus usual care for older people who are frail.
Design: Cost-effectiveness study embedded within a randomized controlled trial.
Setting: Community-based intervention in Sydney, Australia.
Participants: A total of 241 community-dwelling people 70 years or older who met the Cardiovascular
Health Study criteria for frailty.
Intervention: A 12-month multifactorial, interdisciplinary intervention targeting identi?ed frailty char-
acteristics versus usual care.
Measurements: Health and social service use, frailty, and health-related quality of life (EQ-5D) were
measured over the 12-month intervention period. The difference between the mean cost per person for
12 months in the intervention and control groups (incremental cost) and the ratio between incremental
cost and effectiveness were calculated.
Results: A total of 216 participants (90%) completed the study. The prevalence of frailty was 14.7% lower in
the intervention group compared with the control group at 12 months (95% CI 2.4%e27.0%; P ? .02).
There was no signi?cant between-group difference in EQ-5D utility scores. The cost for 1 extra person to
transition out of frailty was $A15,955 (at 2011 prices). In the “very frail” subgroup (participants met >3
Cardiovascular Health Study frailty criteria), the intervention was both more effective and less costly than
the control. A cost-effectiveness acceptability curve shows that the intervention would be cost-effective
with 80% certainty if decision makers were willing to pay $A50,000 per extra person transitioning from
frailty. In the very frail subpopulation, this reduced to $25,000.
Conclusion: For frail older people residing in the community, a 12-month multifactorial intervention
provided better value for money than usual care, particularly for the very frail, in whom it has a high
probability of being cost saving, as well as effective.
? 2015 AMDA e The Society for Post-Acute and Long-Term Care Medicine.
JAMDA
journal homepage: www.jamda.com
Fairhall et al.(2015)が,216名の
要介護者に対して運動や食事コント
ロールなどの複合的介入を行った結
果,通常介護を行った比較群と比べ
要介護状態(frailty)が14.7%改善
し,かつ50,000豪州ドルを追加的
に支出することで信頼度80%で介入
を行なう方が費用対効果を見込める
と報告.
Masaru Unno