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Different strategies for screening and prevention of type 2 diabetes in adults: cost effectiveness analysis.

Abstract：

OBJECTIVE:To compare four potential screening strategies, and subsequent interventions, for the prevention and treatment of type 2 diabetes: (a) screening for type 2 diabetes to enable early detection and treatment, (b) screening for type 2 diabetes and impaired glucose tolerance, intervening with lifestyle interventions in those with a diagnosis of impaired glucose tolerance to delay or prevent diabetes, (c) as for (b) but with pharmacological interventions, and (d) no screening. DESIGN:Cost effectiveness analysis based on development and evaluation of probabilistic, comprehensive economic decision analytic model, from screening to death. SETTING:A hypothetical population, aged 45 at time of screening, with above average risk of diabetes. DATA SOURCES:Published clinical trials and epidemiological studies retrieved from electronic bibliographic databases; supplementary data obtained from the Department of Health statistics for England and Wales, the screening those at risk (STAR) study, and the Leicester division of the ADDITION study. METHODS:A hybrid decision tree/Markov model was developed to simulate the long term effects of each screening strategy, in terms of both clinical and cost effectiveness outcomes. The base case model assumed a 50 year time horizon with discounting of both costs and benefits at 3.5%. Sensitivity analyses were carried out to investigate assumptions of the model and to identify which model inputs had most impact on the results. RESULTS:Estimated costs for each quality adjusted life year (QALY) gained (discounted at 3.5% a year for both costs and benefits) were pound14,150 (euro17 560; $27,860) for screening for type 2 diabetes, pound6242 for screening for diabetes and impaired glucose tolerance followed by lifestyle interventions, and pound7023 for screening for diabetes and impaired glucose tolerance followed by pharmacological interventions, all compared with no screening. At a willingness-to-pay threshold of pound20,000 the probability of the intervention being cost effective was 49%, 93%, and 85% for each of the active screening strategies respectively. CONCLUSIONS:Screening for type 2 diabetes and impaired glucose tolerance, with appropriate intervention for those with impaired glucose tolerance, in an above average risk population aged 45, seems to be cost effective. The cost effectiveness of a policy of screening for diabetes alone, which offered no intervention to those with impaired glucose tolerance, is still uncertain.

journal_name

BMJ

journal_title

BMJ (Clinical research ed.)

authors

Gillies CL,Lambert PC,Abrams KR,Sutton AJ,Cooper NJ,Hsu RT,Davies MJ,Khunti K

doi

10.1136/bmj.39545.585289.25

subject

Has Abstract

pub_date

2008-05-24 00:00:00

pages

1180-5

issue

7654

eissn

0959-8138

issn

1756-1833

pii

bmj.39545.585289.25

journal_volume

336

pub_type

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Different strategies for screening and prevention of type 2 diabetes in adults: cost effectiveness analysis.