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Table 1 Characteristics of the subjects

From: Epithelial cell senescence impairs repair process and exacerbates inflammation after airway injury

 

COPD patients

Smokers

Nonsmokers

 

(n= 14)

(n= 7)

(n= 8)

Male/females, n

12/2

7/0

2/6

Age, years

65.9 ± 2.2

60.9 ± 6.3

64.3 ± 3.8

Smoking, pack years

80.0 ± 14.1††

50.7 ± 6.2†

0 ± 0

FEV1, liters

0.91 ± 0.11**

2.35 ± 0.17

2.14 ± 0.12

FEV1/FVC, %

34.0 ± 3.4**

75.4 ± 2.9

75.0 ± 4.3

FEV1, % predicted

35.5 ± 4.0**

91.0 ± 6.4

101.2 ± 5.4

  1. The COPD patients and smokers were ex-smokers. **P < 0.01 compared to asymptomatic smokers and nonsmokers. †P < 0.05 and ††P < 0.01 compared to asymptomatic nonsmokers.