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Table 1 Patient characteristics

From: Moraxella catarrhalisacquisition, airway inflammation and protease-antiprotease balance in chronic obstructive pulmonary disease

Mean age in years (range) 65.9 (46-81)
Gender Male:38; Female:1
Race Caucasian:32; African-American:7
Mean years since diagnosis (range) 12.5(0-54)
Smoking status on enrollment Current: 13; Ex-smokers:26
Mean smoking pack years (range) 76.3(10-175)
Mean FEV1 in liters (range) 1.62(0.47- 4.07)
Mean FEV1% predicted (range) 47.4(15-99)
GOLD severity (number in each group) 0 = 2; 1 = 1; 2 = 12; 3 = 18; 4 = 6