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PDB64 A review of retrospective, continuous glucose monitoring: an example of a medical device where the typical primary outcome measure may be inappropriate? [Abstract]

Currie, Craig John, Poole, Christopher David and Papo, P. L. 2009. PDB64 A review of retrospective, continuous glucose monitoring: an example of a medical device where the typical primary outcome measure may be inappropriate? [Abstract]. Value in Health 12 (3) , A109. 10.1111/j.1524-4733.2009.00537_2.x

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Abstract

OBJECTIVES: Normoglycaemia in people with diabetes results in improved outcome. Continuous glucose monitoring provides detailed diagnostic information used to optimise therapy. The objective of this study was to review randomised controlled trials (RCTs) of the only device available for blinded, professional use. METHODS: Published studies using the MiniMed Continuous Glucose Monitoring System (CGMS, Medtronic Inc., Northridge, CA) were identifi ed using appropriate search terms in a series of clinical databases including: Medline, Pubmed, Google Scholar and Scientifi c Web of Knowledge. Other measures were also taken such as searching the reference lists and review by recognised experts. RESULTS: Seven randomised controlled trials were identifi ed, fi ve in children. Double-blinding was not possible. Although HbA1c was explicitly stated as the primary endpoint in four studies the studies were only adequately powered to detect large, between-group minimum differences (range 0.5 to 1.0% HbA1c). Only two studies included subjects with type-2 diabetes. Other endpoints included the frequency of hypoglycaemia and hyperglycaemia events. Within-group HbA1c decreases were observed in all but one study. The crude, weighted mean improvement in HbA1c across the studies using the device was 0.6% (range 0% to 0.8%). No studies recorded how the information was utilised to modify treatment, such as changes in dose titration or treatment regimen. CONCLUSIONS: Devices such as the professional CGMS provide detailed diagnostic information. However, any consequent changes in care and outcome can only result from the appropriate application of this information. Although there was a notable improvement in glucose control (HbA1c), existing studies were largely underpowered and did not capture the resulting treatment changes that could lead to improved outcome

Item Type: Article
Status: Published
Schools: Medicine
Subjects: R Medicine > R Medicine (General)
Additional Information: Research Poster Abstracts for ISPOR fourteenth annual international meeting research abstracts
Publisher: Wiley-Blackwell
ISSN: 1098-3015
Last Modified: 04 Jun 2017 03:11
URI: http://orca.cf.ac.uk/id/eprint/17833

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