Epidemiology of Chronic Airways Disease

In: Airways Disease

29 Nov 2014

Epidemiology of Chronic Airways DiseaseThis document summarizes the papers presented at the WHO/I UATLD meeting on chronic airways disease (CAD), sets out future research needs relating to the epidemiology of CAD, and outlines several important initiatives to be undertaken by WHO/IUAXLD.
1.2 Aims
The aims of obtaining epidemiologic data relating to CAD are to obtain estimates of the magnitude of the problem and to identify its etiologic factors. Based on this information, stragegies to prevent and control CAD can be introduced. The articles presented leave little doubt that, although the mortality rate from CAD is falling in the United Kingdom and appears to be falling in other European countries, the mortality and morbidity from his disease continues to rise in many countries. Thus, the disease presents a mounting public health problem in many countries, particularly developing countries, and may continue to do so, at least in the short term, because it attracts relatively little attention from governments and health organizations when compared with other diseases of the lung. add comment

1.3 Problems
At present, accurate assessment of prevalence is possible by suitable epidemiologic surveys, but establishing precise mortality rates is difficult. There are no widely accepted definitions or methodology for measuring CAD and thus, the data available are largely inadequate for making international comparisons. In addition, the presented articles suggest that only some of the causative factors for CAD are well documented. It is therefore essential to instigate widespread and meticulous data collection, with the aid of reliable tools, to determine accurate prevalence figures and to assess the relative importance of potential risk factors in different populations.
2. Evaluation of die Evidence
2.1 Definition (What Is CAD?)

For mortality statistics, all data from categories 490 to 496 in the International Classification of Disease (ICD), 9th revision, should be combined, even though the resultant figure may be slightly high because deaths from asthma and extrinsic, allergic alveolitis are included.


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