Estimating the incidence, prevalence and true cost of asthma in the UK: secondary analysis of national stand-alone and linked databases in England, Northern Ireland, Scotland and Wales-a study protocol

Mome Mukherjee, Ramyani Gupta, Angela Farr, Martin Heaven, Andrew Stoddart, Bright I Nwaru, Deborah Fitzsimmons, George Chamberlain, Amrita Bandyopadhyay, Colin Fischbacher, Christopher Dibben, Michael Shields, Ceri Phillips, David Strachan, Gwyneth Davies, Brian McKinstry, Aziz Sheikh, Burden and True Cost of Asthma in the UK Research Team, Mome Mukherjee, Ramyani Gupta, Angela Farr, Martin Heaven, Andrew Stoddart, Bright I Nwaru, Deborah Fitzsimmons, George Chamberlain, Amrita Bandyopadhyay, Colin Fischbacher, Christopher Dibben, Michael Shields, Ceri Phillips, David Strachan, Gwyneth Davies, Brian McKinstry, Aziz Sheikh, Burden and True Cost of Asthma in the UK Research Team

Abstract

Introduction: Asthma is now one of the most common long-term conditions in the UK. It is therefore important to develop a comprehensive appreciation of the healthcare and societal costs in order to inform decisions on care provision and planning. We plan to build on our earlier estimates of national prevalence and costs from asthma by filling the data gaps previously identified in relation to healthcare and broadening the field of enquiry to include societal costs. This work will provide the first UK-wide estimates of the costs of asthma. In the context of asthma for the UK and its member countries (ie, England, Northern Ireland, Scotland and Wales), we seek to: (1) produce a detailed overview of estimates of incidence, prevalence and healthcare utilisation; (2) estimate health and societal costs; (3) identify any remaining information gaps and explore the feasibility of filling these and (4) provide insights into future research that has the potential to inform changes in policy leading to the provision of more cost-effective care.

Methods and analysis: Secondary analyses of data from national health surveys, primary care, prescribing, emergency care, hospital, mortality and administrative data sources will be undertaken to estimate prevalence, healthcare utilisation and outcomes from asthma. Data linkages and economic modelling will be undertaken in an attempt to populate data gaps and estimate costs. Separate prevalence and cost estimates will be calculated for each of the UK-member countries and these will then be aggregated to generate UK-wide estimates.

Ethics and dissemination: Approvals have been obtained from the NHS Scotland Information Services Division's Privacy Advisory Committee, the Secure Anonymised Information Linkage Collaboration Review System, the NHS South-East Scotland Research Ethics Service and The University of Edinburgh's Centre for Population Health Sciences Research Ethics Committee. We will produce a report for Asthma-UK, submit papers to peer-reviewed journals and construct an interactive map.

Keywords: EPIDEMIOLOGY; HEALTH ECONOMICS.

Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://group.bmj.com/group/rights-licensing/permissions.

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