Table 1 Baseline characteristics of asthma patients from the Netherlands Epidemiology of Obesity study (n = 472)
|  | BMI < 30 kg/m2 | BMI ≥ 30 kg/m2 | Difference (95% CI)a |
|---|---|---|---|
n = 224 | n = 248 | ||
Age in years, mean (SD) | 55.4 (5.9) | 54.9 (6.3) | −0.5 (−1.6, 0.6) |
Sex, n (% men) | 98 (44) | 87 (35) | 8.7 (−0.1, 17.5) |
Height in meters, mean (SD) | 1.7 (0.1) | 1.7 (0.1) | −0.0 (−0.0, 0.0) |
BMI in kg/m2, mean (SD)b | 27.1 (2.4) | 34.9 (4.4) | 7.8 (7.2, 8.5) |
Smoking |  |  | 1.3 (−10.5, 13.2) |
 Never, n (%) | 83 (37) | 94 (38) |  |
 Former, n (%) | 117 (52) | 122 (49) |  |
 Current, n (%) | 24 (11) | 32 (13) |  |
Alcohol intake in g/d, mean (SD)b | 15.6 (16.4) | 11.4 (15.3) | −3.2 (−6.1, −0.3) |
Ethnicity, n (% Caucasian) | 208 (93) | 235 (95) | 1.9 (−2.5, 6.3) |
Education, n (% high) | 98 (44) | 80 (32) | −11.5 (−20.3, −2.7) |
Physical activity MET h/week, mean (SD)b | 38.7 (35.5) | 31.4 (30.8) | −7.3 (−13.4, −1.3) |
Medication | |||
 SABA, n (%) | 34 (15) | 49 (20) | 4.6 (−2.3, 11.4) |
 LABA, n (%) | 8 (4) | 11 (4) | 0.9 (−2.7, 4.4) |
 SAMA, n (%) | 1 (1) | 7 (3) | 2.4 (1.2, 4.6) |
 LAMA, n (%) | 12 (5) | 12 (5) | 0.5 (−4.5, 3.5) |
 ICS, n (%) | 41 (18) | 41 (17) | −1.8 (−8.7, 5.1) |
 Combination LABA + ICS, n (%) | 71 (32) | 84 (34) | 2.2 (−6.3, 10.7) |
Asthma duration in years, mean (SD)b | 19.4 (18) | 20.5 (18.1) | 1.1 (−2.1, 4.4) |