Analysis of QMAS Disease Prevalence Data Kent & Medway

1. Kent & Medway HIS Analysis of QMAS Disease Prevalence Data Kent & Medway August 2005 Produced by Helen Buttivant Senior Public Health Information Analyst, Kent & Medway Health Informatics Service Tel: 01622 793594 E-Mail: helen.buttivant@nhs.net

2. Kent & Medway HIS Contents of Report: • Analysis of Disease Prevalence at 3 levels: • National • PCT • Practice • Evaluation of the QMAS data & comparison to other sources of Disease Prevalence

3. Kent & Medway HIS Disease Prevalence at PCT Level • Comparison of prevalence between PCTs for each individual condition • Comparison of prevalence of every condition in each PCT

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7. Kent & Medway HIS Disease Prevalence at Practice Level • Comparison of prevalence between Practices for each individual condition • Basic analysis of the relationship between practice deprivation and disease prevalence for each individual condition

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9. Kent & Medway HIS Methodology for calculating GP Practice Deprivation Scores: • GP Practice deprivation scores are weighted estimates based on the National Index of Multiple Deprivation Scores for Kent LLSOAs published in 2004.   • The registered population for each Practice is broken down by postcode. • Each postcode is assigned a deprivation score (the score for the LLSOA in which the postcode is located). • The deprivation score for the postcode is multiplied by the no. of persons registered with the practice that live within that postcode. • This calculation is repeated for all postcodes for that practice. • These figures are then summed to give a total for that practice. • This total figure is then divided by the total registered population of the practice to give an overall weighted deprivation score.

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11. Kent & Medway HIS Evaluation of the QMAS data • Issues regarding data capture and disease register inclusion criteria • Data limitations: • Comparison to other sources of national prevalence rates • Local effects

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13. Kent & Medway HIS Sources: CHD - Health Survey for England, 2003 LVD - Heart of England Screening Study 2001: Davies MK, Hobbs FDR, Davis RC, Kenkre JE, Roalfe AK, Hare R, Wosornu D, Lancashire RJ (2001) Prevalence of left-ventricular systolic dysfunction and heart failure in the Echocardiographic Heart of England Screening study: a population based study. The Lancet 358:439-444. Stroke / TIA - Health Survey for England, 2003 Hypertension - Health Survey for England, 2003 Diabetes - Yorkshire Public Health Observatory PBS Diabetes Prevalence Model 2005 COPD - Lung Report III, British Lung Foundation Report 2000 Epilepsy - The National Society for Epilepysy : J.W. Sander, The incidence and prevalence of epilepsy, 2003 Hypothyroidism - Vanderpump MP, Tunbridge WM.Epidemiology and prevention of clinical and subclinical hypothyroidism.Thyroid. 2002 Oct;12(10):839-47. Cancer - ONS National Cancer Intelligence Database, 2002 Asthma – Asthma UK / National Asthma Campaign

14. Kent & Medway HIS What else has been done? • Birmingham and Black Country SHA • North Tees PCT • Our future plans

15. Kent & Medway HIS Any Questions?