Table 5

 Asthma and hay fever according to BMI in tertiles, and adjusted associations of BMI with asthma and hay fever

Lower tertileMedium tertileUpper tertile
BMI <22.7622.76<BMI<25.71BMI >25.71
(n = 716)(n = 736)(n = 709)OR (95% CI)*
(%)(%)(%)(per kg/m2)
*From logistic regression models with adjustment for smoking habits, BMI, age, centre and social class
†Asthma medication and/or asthma attacks last 12 months.
‡Wheeze in the last 12 months
§Symptoms included: wheeze, wheeze with shortness of breath, wheeze without cold, waking with tightness in chest, waking with shortness of breath, waking with cough, asthma attacks, current asthma medication
**Waking with tightness in chest or waking with shortness of breath
††Hay fever or nasal allergies.
‡‡Asthma and hay fever.
Asthma†6.95.8111.08 (1.05 to 1.12)
Wheeze‡17.416.226.11.09 (1.06 to 1.12)
Three or more symptoms§11.511.920.71.10 (1.07 to 1.13)
Night symptoms**10.912.817.11.06 (1.03 to 1.09)
Hay fever††22.823.725.51.02 (0.99 to 1.04)
Allergic asthma‡‡ (1.00 to 1.10)