The associations of atopy with possible factors of atopy (n = 15828).

<p>* Adjusted for gender, age, and study population.</p><p>** Further adjusted for birth year (except for age), education, physical activity, smoking habits, alcohol intake, BMI, systolic blood pressure and serum total cholesterol.</p><p>*** P-value for trend.</p><p>Abbreviations: OR, odds ratio; BMI, body mass index; CI, confidence interval.</p><p>The associations of atopy with possible factors of atopy (n = 15828).