Closing the Gap

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Abstract
Until now, most healthcare policies have been focused on the relatively small number of patients with long-term conditions who suffer from a high disease burden, and less attention has been directed toward detecting patients with undiagnosed long-term conditions. In the United Kingdom, population-based data on the prevalence of disease detected in primary care are now available. Prevalence models for diabetes, coronary heart disease, hypertension, and chronic obstructive pulmonary disease provide survey-based estimates for small populations based on local data on known risk factors. These suggest that a significant proportion of prevalent disease remains undiagnosed. Other models are being developed. More systematic case finding to close disease prevalence gaps may be cost-effective, but case-finding strategies need to be tested and current and new models require validation.