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Table 1 Clinical characteristics of patients with and without emphysema

From: Hepatocyte and keratinocyte growth factors and their receptors in human lung emphysema

  Emphysema (E) Non-emphysema Smokers (S) Non-emphysema Non-Smokers (NS) Between groups differences
n 17 8 10  
Age (yr) 60 ± 7.4 55.8 ± 11.2 52.7 ± 19.4 ns
Sex ratio F/M 1/16 0/8 2/8 ns
Smoking (Pack.yr) 51 ± 21.4* 33.3 ± 14.8 0 p < 0.001
Time since smoking cessation (yearrs) 7.0 ± 7.1 10 (n = 1) Non relevant Non relevant
Active smokers/ex-smokers 7/10 7/1 0/0 p < 0.001
  1. *: vs S, p < 0.05; as assessed by Mann-Whitney U-test. ns: non significant.