Table 1 Patient characteristics

Age

57.3 ± 13.83

59.9 ± 11.59

54.7 ± 15.36

BMI^a

31.0 ± 6.43

32.3 ± 6.59^ǂ

29.6 ± 5.97^ǂ

 n < 25

38 (19.0)

13 (12.9)

25 (25.3)

 n 25–29.9

55 (27.5)

23 (22.8)

32 (32.3)

 n ≥ 30

107 (53.5)

65 (64.3)

42 (42.4)

Male, n (%)

70 (35.0)

45 (44.6)

25 (25.3)

Female, n (%)

130 (65.0)

56 (55.4)

74 (74.7)

 FEV1% Predicted

71.98 ± 24.01

75.92 ± 20.85^ǂ

67.95 ± 26.24^ǂ

 FEV1/FVC

71.55 ± 12.12

73.71 ± 10.81^ǂ

69.33 ± 12.97^ǂ

 FEF50/FIF50% Predicted

42.75 ± 27.93

44.12 ± 25.36

41.34 ± 30.28

Smoker (current and former), n (%)

91 (45.5)

48 (47.5)

43 (43.4)

Smokers Pack Years

23.5 ± 21.96

23.6 ± 21.98

23.4 ± 21.95