Association between markers of iron metabolism and total or uncarboxylated osteocalcin serum levels.

β values are unstandardized regression coefficients and represents the change in total and uncarboxylated osteocalcin according to increases in ferritin, soluble transferrin receptor and the ratio of sTfR/ferritin. Model 1: adjusted for sex, age and BMI, smoking status, total energy intake and energy expenditure in leisure-time physical activity. Model 2: additionally adjusted for fasting plasma glucose, insulin and markers of inflammation and oxidative stress (adiponectin, C-reactive protein, oxidized LDL) and ferritin and transferrin receptor adjusted for each other).