Research Article

Negative Impact of Vitamin D Deficiency at Diagnosis on Breast Cancer Survival: A Prospective Cohort Study

Figure 3

Kaplan–Meier graph for cancer-specific survival in patients with breast cancer according to serum 25-hydroxy vitamin D concentrations, sufficient (≥30 ng/mL), insufficient (20–30 ng/mL), and deficient (<20 ng/mL). Significance between sufficient x insufficient and between sufficient x deficient .