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Table 1 Baseline characteristics of cohorts

From: Folliculin mutations are not associated with severe COPD

 

EOCOPD (n = 152)

NETT (n = 345)

NAS (n = 420)

Age, years

47.9 (4.7)

67.4 (6.0)

66.9 (8.6)

Male

41 (27.0%)

222 (64.4%)

420 (100%)

Pack-years of smoking

38.6 (20.8)

66.7 (30.9)

33.0 (22.8)

FEV1 (% Predicted)*

23.0 (9.8)

28.1 (7.5)

99.0 (12.0)

  1. EOCOPD = Boston Early-Onset COPD Study; NETT = National Emphysema Treatment Trial; NAS = Normative Aging Study
  2. Reported as mean (SD) or no. (%)
  3. *Reference values for NETT and EOCOPD from Crapo[42], for NAS from O'Connor[43].