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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%)