Quality data finds only half of estimated COPD

UK prevalence of COPD is more than double the level shown by quality framework data, research has suggested.

Quality data for 2005/6 indicate that 1.7 per cent of the UK population has COPD.

But the true figure could be as high as 4 per cent, according to a study of 13,654 patients by the general practice research unit at the North West Lung Research Centre in Manchester.

A diagnosis of COPD, as indicated by spirometry results, was made in 552 of the participants, giving a COPD prevalence of 4 per cent for the total population.

The estimated prevalence was then calculated for different age groups, ranging from 30 to 80 years of age.

The findings reinforce previous calls to screen individuals over the age of 40 for COPD - prevalence was 9.6 per cent in those over the age of 40, and as high as 14.7 per cent in those aged 60-69.

Between 30 and 39 there was a COPD prevalence of just 0.5 per cent, however.

Lead researcher Dr Timothy Frank said a combination of factors was to blame for the under-diagnosis of COPD.

'Patients with COPD may not be visiting their GP because their symptoms are not causing them any problems,' he said.

'Those who do attend may be treated for coexisting or alternative medical complaints such as asthma and chest infections, so spirometry is not performed and a diagnosis is not made.'


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