Association between serum 25-hydroxyvitamin D levels and pulmonary function, among Korean adults, during 2010-2014, by sex, age, and body mass index.

Background: This study examined the association between serum 25-hydroxyvitamin D (25(OH)D) and pulmonary function, among Korean adults, from 2010 to 2014.

Methods: The data were obtained from the fifth Korea National Health and Nutrition Examination Survey (KNHANES 5), and the first and second year (2013-2014) of KNHANES 6. The study population comprised 14,378 individuals.