Hazard ratios and 95% confidence intervals for the prospective associations between serum 25-OH vitamin D status and incident fatal and non-fatal COPD (person years at risk = 101,719, number of events = 375, total number = 10,523).

$Adjusted for study population.&Further adjusted for gender, education, and season.%Further adjusted for alcohol consumption, smoking, leisure time physical activity, intake of fish, and BMI.€Further adjusted for baseline FEV1% predicted.¤Persons with a diagnosis of COPD before baseline were excluded. Complete case analysis.Abbreviations: CI, confidence interval; COPD, chronic obstructive pulmonary disease; BMI, body mass index; HR, hazard ratio; 25-OH-D, 25-hydroxyvitamin D; FEV1% predicted, forced expiratory volume in one second in % of predicted.