TABLE 1

Association between body mass categories and asthma definitions

Medical diagnosisMedical diagnosis or positive bronchodilationMedical diagnosis with asthma symptoms or positive bronchodilationMedical diagnosis and under asthma treatment
Crude modelAdjusted modelCrude modelAdjusted modelCrude modelAdjusted modelCrude modelAdjusted model
CDC
 Normal weight11111111
Overweight1.80 (0.90–3.62)2.25 (1.09–4.64)1.75 (1.04–2.94)2.00 (1.17–3.42)1.78 (1.04–3.07)2.05 (1.17–3.59)1.99 (0.95–4.13)2.55 (1.18–5.50)
Obesity1.06 (0.43–2.62)1.39 (0.55–3.50)1.05 (0.55–2.03)1.25 (0.64–2.43)0.98 (0.48–1.98)1.17 (0.57–2.41)1.08 (0.40–3.87)1.47 (0.54–4.03)
WHO
Normal weight11111111
Overweight1.27 (0.65–2.48)1.29 (0.64–2.57)1.56 (0.96–2.53)1.58 (0.96–2.60)1.60 (0.96–2.67)1.61 (0.95–2.73)1.49 (0.73–3.01)1.50 (0.72–3.13)
Obesity0.98 (0.42–2.27)1.24 (0.52–2.94)1.06 (0.57–1.97)1.28 (0.67–2.36)1.05 (0.54–2.02)1.26 (0.64–2.47)1.04 (0.42–2.59)1.39 (0.55–3.55)
IOTF
Normal weight11111111
Overweight1.95 (1.04–3.65)2.42 (1.25–4.66)1.77 (1.11–2.85)1.99 (1.22–3.25)1.72 (1.05–2.83)1.94 (1.16–3.25)2.10 (1.08–4.11)2.68 (1.32–5.45)
Obesity0.34 (0.05–2.53)0.46 (0.06–4.48)0.64 (0.22–1.83)0.76 (0.26–2.21)0.73 (0.26–2.11)0.87 (0.30–2.59)0.41 (0.06–3.11)0.59 (0.08–4.57)
% body fat
Normal weight11111111
Overweight1.31 (0.62–2.73)1.29 (0.60–2.76)1.21 (0.69–2.13)1.25 (0.71–2.22)1.10 (0.60–2.02)1.14 (0.62–2.12)1.41 (0.65–3.08)1.43 (0.64–3.20)
Obesity1.00 (0.45–2.23)1.15 (0.51–2.61)1.28 (0.74–2.23)1.46 (0.83–2.56)1.26 (0.71–2.25)1.46 (0.81–2.63)1.71 (0.46–2.52)1.29 (0.54–3.09)

Data are presented as OR (95% CI). Adjusted models for age, sex, exhaled NO and atopy. CDC: Centers for Disease Control and Prevention; WHO: World Health Organization; IOTF: International Obesity Task Force. Significant differences in bold.