Table 2

Association between asthma and BMI
Variables Asthma confirmed by BHR Previous asthma diagnosis
N cases OR (95% CI) N cases OR (95% CI)
BMI (kg/m2) 1919 200 1919 284
< 25.0 1224 128 1 1224 182 1
25.0-29.9 464 44 0.94 (0.65 – 1.37) 464 80 1.38 (1.03 – 1.86)
≥ 30.0 231 28 1.08 (0.69 – 1.68) 231 42 1.48 (1.01 – 2.16)
Physical activity 1922 200 1922 284
Active 1113 97 1 1113 149 1
Inactive 809 103 1.16 (0.85- 1.58) 801 135 1.37 (1.05 – 1.79)
Gender 1922 200 1922 284
Male 942 67 1 942 144 1
Female 980 133 2.15 (1.55 – 2.98) 980 140 0.89 (0.68 – 1.16)
Smoking habit 1922 200 1922 284
Non-smokers 1588 156 1 1588 234 1
Smokers 334 44 1.48 (1.02 – 2.13) 334 50 1.00 (0.71 - 1.40)
Schooling (years) 1922 200 1922 294
≥ 12 282 45 1 282 35 1
9-11 978 118 0.74 (0.50 – 1.08) 978 144 1.27 (0.85 – 1.89)
≤ 8 662 37 0.31 (0.19 – 0.50) 662 105 1.47 (0.97 – 2.23)

N: number of subjects.

cases: numbers of subjects with asthma in every category.

CI: confidence interval.

OR: odds ratio.

BMI: body mass index.

BHR: bronchial hyperresponsiveness.

Analysis was adjusted for gender, socioeconomic level, smoking status and physical activities.

Multivariate analysis.

Cetlin et al.

Cetlin et al. BMC Public Health 2012 12:844   doi:10.1186/1471-2458-12-844

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