Table 6

 Odds ratios (OR) of developing two or more respiratory symptoms† according to baseline characteristics in asymptomatic subjects at baseline (using multivariate logistic regression analysis)

CharacteristicsOR (95% CI)
*p<0.1; **p<0.05; ***p<0.01.
†At least two of the following symptoms: wheezing, shortness of breath, chest tightness, cough, respiratory complaints upon exertion.
    AHR ⩽8 v >8 mg/ml8.33 (2.65 to 26.16)***
    Non-specific rhinitis2.35 (0.90 to 6.11)*
    Rhinitis to animals2.14 (0.81 to 5.64)
    Rhinitis to pollen0.67 (0.24 to 1.84)
    Family history of asthma1.15 (0.38 to 3.48)
Interaction terms
    Family history of asthma × rhinitis to pollen6.31 (1.25 to 31.89)**