Morgan, Christopher L., Currie, C. J., Stott, N. C. H., Smithers, M., Butler, Christopher Collett ![]() |
Abstract
Aims To determine diagnosed diabetic prevalence within our district (population 434 398) in 1996 using data from two sources. Methods A general practice audit comprising data on patients with diabetes from 61 (82%) of 74 general practices was linked to a record linkage-derived patient index in which data from secondary care and other sources underwent a process of probability matching to identify records relating to the same patient and to flag those with diabetes. By linking this dataset to a mortality dataset, patients known to have died before 1996 could be excluded. Age and sex-stratified emigration rates were applied to those identified by the hospital dataset for each year from 1991 onwards. Results A total of 386 988 residents (89.1%) were listed with a general practitioner participating in the audit, of whom 6050 patients were identified as having diabetes in 1996; a prevalence rate of 1.56%. From the hospital-based source, 7639 patients were identified who were alive in 1996, a period prevalence of 1.76%. By combining the two sources, and extrapolating the general practice audit to the population as a whole, a total of 10 530 patients were identified of whom 8735 were confirmed as still resident within South Glamorgan during 1996. This represented a period prevalence of between 2.01% to 2.42%. By applying age and sex-stratified migration rates to the diabetic population identified by hospital sources, a diagnosed diabetic population of 10,004 was identified, a prevalence of 2.3%. Conclusions This study demonstrates that to calculate the true prevalence of diagnosed diabetes from health sources, it is necessary to use both primary and secondary care sources.
Item Type: | Article |
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Date Type: | Publication |
Status: | Published |
Schools: | Medicine Systems Immunity Research Institute (SIURI) |
Subjects: | R Medicine > R Medicine (General) |
Uncontrolled Keywords: | Diabetes; prevalence; record linkage. |
Publisher: | Wiley |
ISSN: | 0742-3071 |
Last Modified: | 25 Oct 2022 09:41 |
URI: | https://orca.cardiff.ac.uk/id/eprint/59614 |
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