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Table 1 Subject characteristics

From: Sputum and nasal lavage lung-specific biomarkers before and after smoking cessation

Time Smokers Never-smokers
  Before sm-ces 0 After sm-ces 6 m After sm-ces 12 m 0
N 76 29 22 10
Sex, M/F 65/11 26/3 20/2 8/2
Age, (yr) 48 ± 9 48 ± 8 47 ± 7 33 ± 9*
Smoking (p-yr) 57 ± 18 53 ± 16 56 ± 18 N/A
FEV 1 ,%pred 104 ± 11 105 ± 13 108 ± 9 114 ± 14
FEV 1 /FVC% 80 ± 6 81 ± 5 80 ± 6 87 ± 6
Fagerstrom score 8 ± 2 7 ± 1 7 ± 1 N/A
  1. Data are presented as mean ± SD, or in absolute numbers. sm-ces: smoking cessation, N: numbers, M: male, F: female, yr: years, p-yr: pack years, FEV1: forced expiratory volume in one second, FVC: forced vital capacity, N/A: non applicable
  2. * p < 0.05 versus successful quitters at baseline,