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Table 1 Description of patient cohorts

From: Asthma and COPD exacerbation in relation to outdoor air pollution in the metropolitan area of Berlin, Germany

Parameter

Asthma

COPD

Admissions, n

876

8645

Male, n (%)

341 (38.9%)

5038 (58.3%)

Female, n (%)

535 (61.1%)

3607 (41.7%)

Age, years, mean ± SD

52.2 ± 19.5

68.1 ± 10.2

Current smoker, n (%)

43 (4.9%)

721 (8.3%)

Influenza, n (%)

8 (0.9%)

20 (0.2%)

Length of stay, days, mean ± SD

7.5 ± 8.8

10.9 ± 14.2

Died in hospital, n (%)

15 (1.7%)

392 (4.5%)