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Table 1 Clinical and lung function data (mean±SD) of all participants

From: An investigation of the resolution of inflammation (catabasis) in COPD

 

COPD patients

Smokers with normal spirometry

Non smokers

Overall p value

Current smokers

Former smokers

Current smokers

Former smokers

N

10

11

11

11

13

 

Age, years

64 ± 9

69 ± 10*

55 ± 8+

66 ± 10

62 ± 9

<0.01

Males, n (%)

10 (100)

10 (91)

8 (73)

9 (82)

3 (23)

<0.0001

Smoking exposure, pack-yr.

64 ± 41

58 ± 22

47 ± 26

64 ± 13

_

NS

FEV1 / FVC1, %

56 ± 12&

54 ± 7&

77 ± 7

77 ± 6

83 ± 4

<0.0001

FEV1, % reference

70 ± 12&

67 ± 11&

97 ± 14

96 ± 19

98 ± 11

<0.0001

  1. NS: non-significant. * p <0.01 vs. current smokers; + p < 0.05 vs. former smokers; & p<0.001 vs. current smokers, former smokers and never smokers.