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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