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Table 1 Baseline characteristics of the COPD and control subjects.

From: ADAM33 gene polymorphisms in chronic obstructive pulmonary disease

  All COPD Stable COPD Unstable COPD Control
Number 150 60 90 152
Age 62.6 ± 11.4 61.6 ± 11.7 63.4 ± 11.2 63.4 ± 18.2
Gender (F/M) 50/100 20/40 30/60 107/45
Pack/years 31.1 ± 22.9 28.6 ± 15.3 32.8 ± 26.1 18.7 ± 8.4
Smokers 73 (49%) 33 (55%) 40 (44%) 47 (31%)
Non-Smokers 13 (9%) 2 (3%) 11 (12%) 12 (8%)
Ex-Smokers 64 (43%) 25 (42%) 39 (43%) 93 (61%)
FEV1 (% pred) 52.4 ± 21.1 59.2 ± 19.4 47.9 ± 21.0 81.6 ± 21.5
FEV1/FVC 58.6 ± 14.9 60.3 ± 14.7 57.4 ± 14.9 94.0 ± 12.7
GOLD I 19 7 12  
GOLD II 38 16 22  
GOLD III 80 33 47  
GOLD IV 13 4 9  
  1. Data are means ± SD.