Table 1 Characteristics of the study population

Average age in years (Range)

48.9 (18 – 69)

Gender (% female)

83

White (%)

6

Black (%)

81

Other (%)

13

Ex-smokers n (%)

21 (33%)

Average Pack-per-year (95% C.I.)

4 (2 – 5)

Average body weight in pounds (95% C.I.)

198 (186 – 209)

Average BMI (95% C.I.)

32 (31 – 35)

Normal weight (BMI ≥ 18 ≤ 25) (%)

14

Overweight (BMI > 25 < 30)

28

Obese (BMI ≥ 30)

58

Average waist/hip ratio (95% C.I.)

0.87 (0.85 – 0.9)

Diabetes (%)

18

GERD treatment (%)

60

Hypertension (%)

45

Obstructive sleep apnea (%)

12

Average FEV₁ (95% C.I.)

2.1 (2.0 – 2.3)

Average FVC (95% C.I.)

2.8 (2.6 – 3.0)

Average FEV₁/FVC (95% C.I.)

0.80 (0.7 – 0.8)

Average FRC (95% C.I.)

3.2 (2.8 – 3.5)

Average Exhaled NO (95% C.I.) (ppb)*

25 (19 – 30)

Average Exhaled 8-isoprostanes (95% C.I.) (pg/ml)

11 (9.6 – 12.4)

Average Adiponectin (μg/ml) (95% C.I.)

3 (2.9 – 3.4)

Average Leptin (ng/ml) (95% C.I.)

15 (12 – 18)