PTH and hypophosphatemia: However, some important clinical information such as hypophosphatemia or hyperphosphatemia treatments, including the use of intravenous or oral phosphate supplements, phosphate binders, serum phosphate-altering medications, urine phosphate excretion, and other biochemical data of mineral metabolism (e.g., vitamin D, and parathyroid hormone), was not available in our database and, therefore, we were not able to account for them in the analysis.