Document Classification

Section Type: RESULTS

Text: We found an association between mortality and age [HR 1. 05 (CI 95 % : 1. 03-1. 06)], Charlson score [HR 1. 49 (CI 95 % : 1. 06-2. 09)], increasing neutrophil count [HR 1. 05 (CI 95 % : 1. 02-1. 09)], severe [HR 1. 41 (CI 95 % : 1. 06-1. 86)] / very severe COPD [HR 2. 19 (CI 95 % : 1. 58-3. 02)] and a smoking history of more than 40 pack years [HR 1. 27 (CI 95 % : 1. 02-1. 70)].