Multivariable logistic regression analyses of the cross-sectional association between vitamin D status and COPD (Number of events = 67, total number = 10,987).

$<p>Adjusted for study population.</p>&<p>Further djusted for gender, age, education, and season.</p>¤<p>Further adjusted for alcohol consumption, smoking, leisure time physical activity, intake of fish, and BMI.</p><p>Abbreviations: CI, confidence interval; COPD, chronic obstructive pulmonary disease; BMI, body mass index; OR, odds ratio; 25-OH-D; 25-hydroxyvitamin D.