This study examined the distribution and determinants of serum 25-hydroxyvitamin D (25OHD) and parathyroid hormone (PTH) and their associations with bone mineral density (BMD) at the hip and spine in 414 older men (mean age 74 years) living in southern California.
Department of Family and Preventive Medicine, Division of Epidemiology, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093-0607, USA.