Table 2.

Displayed are the detection rates (Pi*ZZ) of different time periods, the characteristics of the population screened at that time (age in years; mean ± standard deviation) and the three most frequent clinical characteristics that led to the test initiation. Numbers do not add up to 18,683, because for some individuals the gender was not recorded and could not be deducted by the name

	Detection rate [%]	Age [years]	Male/female	Most frequent clinical characteristics
2003/04/05	8.65	39.8 ± 21.9	1105/887	1. Cough
				2. Emphysema
				3. Wheezing
2006/07	4.04	40.4 ± 21.7	1527/1399	1. Dyspnoea on exertion
				2. Cough
				3. Wheezing
2008/09	4.25	48.9 ± 21.6	1973/1791	1. Dyspnoea on exertion
				2. Cough
				3. Phlegm
2010/11	4.98	48.2 ± 20.3	2127/1888	1. Dyspnoea on exertion
				2. Cough
				3. Phlegm
2012/13	7.91	47.9 ± 19.1	1808/1661	1. Dyspnoea on exertion
				2. Cough
				3. COPD
2014/15	11.26	48.5 ± 18.8	1280/1139	1. Dyspnoea on exertion
				2. COPD
				3. Cough
All	6.85	45.9 ± 20.8	9820/8765	1. Dyspnoea on exertion
				2. Cough
				3. COPD