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Explaining variations in reported diabetes prevalence in general practice: how much variation is explained by

Elizabeth Goyder¹, Vicky Hammersley

¹ScHARR (School of Health and Related Research), University of Sheffield, Regent Court, 30 Regent St, Sheffield S1 4DA. e.goyder@sheffield.ac.uk

The British Journal of General Practice : the Journal of the Royal College of General Practitioners

|November 7, 2003

Summary

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Diabetes prevalence varies significantly across United Kingdom (UK) populations. Population obesity and South Asian ethnicity were found to be key predictors of this variation, explaining 80% of differences between practices.

Area of Science:

Public Health
Epidemiology
Health Services Research

Background:

Reported diabetes prevalence shows significant variation across different United Kingdom (UK) populations.
Understanding the drivers of this variation is crucial for accurate public health planning and resource allocation.

Purpose of the Study:

To investigate whether specific population characteristics explain the observed variations in diabetes prevalence among UK general practices.
To determine if factors like obesity, ethnicity, and socioeconomic status predict diabetes prevalence.

Main Methods:

Linear regression analysis was employed to examine the relationship between population characteristics and diabetes prevalence.
Data from 19 UK general practices with relatively complete diagnostic recording were analyzed.

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Main Results:

Population obesity and South Asian ethnicity were identified as major factors explaining the variation in diabetes prevalence (adjusted R2 = 0.80).
After accounting for obesity and ethnicity, the deprivation score was no longer a significant predictor of diabetes prevalence.

Conclusions:

Population characteristics, specifically obesity and ethnicity, are strong predictors of diabetes prevalence variation between general practices in the UK.
These findings suggest that obesity and ethnicity data can be used to predict expected diabetes prevalence and to assess the completeness of practice patient registers.