[The prevalence of COPD in Austria--the expected change over the next decade].
BACKGROUND
In 2020 Chronic obstructive pulmonary disease (COPD) will be the third leading cause of death world-wide causing considerable health costs. Epidemiological data to estimate the future development of COPD in Austria were not available so far.


METHODS
In the context of the international Burden of Obstructive Lung Disease (BOLD) study, a random sample of the population of Salzburg was surveyed to determine the prevalence of COPD. The definition of COPD followed the GOLD classification. A prior physician's diagnosis of COPD, emphysema or chronic bronchitis was evaluated by questionnaire. The age- and sex-specific prevalence of COPD was extrapolated using demographic data of the Austrian population for the years 2005, 2010, 2015 and 2020. Undiagnosed COPD was considered present, whenever irreversible airways obstruction was measured (FEV1/FVC < 0.7), but a doctor's diagnosis of COPD, emphysema or chronic bronchitis has not been made.


RESULTS
For 2005 1.047.150 Austrians aged 40 years and older were estimated in GOLD stage I-IV. 431.080 persons over 40 years were affected by COPD in GOLD stage II-IV needing therapy. The percentage of undiagnosed COPD was 88,5%. For the years 2010, 2015 and 2020 GOLD stage I-IV COPD was projected to rise by 7,8%, 16.1% and 24%, respectively.


CONCLUSIONS
Measures to prevent COPD are absolutely necessary to forestall the projected burden of this disease in Austria.
Firlei
Natalie
N
Universitätsklinik für Pneumologie, Paracelsus Medizinische Privatuniversität, Salzburg, Austria. n.firlei@salk.at
Lamprecht
Bernd
B
Schirnhofer
Lea
L
Kaiser
Bernhard
B
Studnicka
Michael
M
D000328:Adult; D000367:Age Factors; D001317:Austria / Q000453:epidemiology; D029481:Bronchitis, Chronic / Q000175:diagnosis; D017281:Cost of Illness; D005260:Female; D005541:Forced Expiratory Volume; D005544:Forecasting; D006801:Humans; D008297:Male; D015995:Prevalence; D029424:Pulmonary Disease, Chronic Obstructive / Q000175:diagnosis / Q000453:epidemiology* / Q000517:prevention & control; D011656:Pulmonary Emphysema / Q000175:diagnosis; D012737:Sex Factors; D012907:Smoking / Q000453:epidemiology; D016540:Smoking Cessation; D013147:Spirometry; D011795:Surveys and Questionnaires