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QUESTION: Which screening tests for diabetic retinopathy are most effective?
Data sources
Studies (1983–99) were identified by searching CINAHL, the Cochrane Trials Register, EMBASE/Excerpta Medica, HealthSTAR, Medline, PsycLIT, Science Citation Index, Social Science Citation Index, HEED, NHS Economic Evaluation Database for Economic Evaluations, ECRI HTAIS, HMIC, and SIGLE. Conference proceedings were identified by using the Index to Scientific and Technical Conference Proceedings.
Study selection
English language, published studies of type 1 and 2 diabetes mellitus were selected if they addressed screening for and early management of diabetic retinopathy. Inclusion criteria were a prospective study design, comparison of ≥1 screening method in a blinded fashion with a reference standard, and all patients having had the reference examination. …
Footnotes
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Sources of funding: National Institute of Clinical Excellence and NHS Centre for Reviews and Dissemination.
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For correspondence: Professor A Hutchinson, University of Sheffield, Section of Public Health, ScHARR, Regent Court, 30 Regent Street, Sheffield S1 4DA, UK. Fax + 44 0114 222 0791.