Fig. 1

Correlation between serum osteocalcin levels and dietary variables among vitamin D-deficient and vitamin D-insufficient women. (A) Correlation between usual dietary calcium intake (mg/day) and serum osteocalcin levels (ng/mL). (B) Correlation between usual dietary calcium-to-phosphorus (Ca: P) intake ratio and serum osteocalcin levels (ng/mL). (C) Correlation between usual dairy (milk and milk product) intake (mL/day) and serum osteocalcin levels (ng/mL). Each dot represents one participant (n = 106). Red dashed lines indicate linear regression fits. Ca: P calcium-to-phosphorus ratio.