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Table 1 Anthropometric characteristics and pulmonary function data of human subjects

From: Accumulation of metals in GOLD4 COPD lungs is associated with decreased CFTR levels

Variables GOLD 0 GOLD 4 p value
  (n = 9) (n = 11)  
Age, years 65.1 ± 7.4 55.5 ± 1.9 0.09 (n.s.)
Male/Female gender 5/3 4/6 -
Smoking, pack-year 22.5 ± 12.1 58 ± 10.8 0.02*
Stop years 32.8 ± 8.9 7.2 ± 7.7 3.4 × 10−6**
FEV1, % predicted 103.4 ± 7.3 18.1 ± 1.2 3.47 × 10−10**
FVC, % predicted 100.8 ± 8.1 48.5 ± 3.7 6 × 10−10**
FEV1/FVC 75 ± 1.9 32 ± 3.9 4 × 10−8**
  1. Data are presented as mean ± SEM; n.s., non significant; *p < 0.05, **p < 0.01.