Table 2. Preoperative demographics and clinical data between focused parathyroidectomy and conventional parathyroidectomy groups.

Values are presented as mean ± standard deviation or number (%).

Reference values for our institution: calcium, 8.6–10.6 mg/dL; PTH, 15–65 pg/mL; phosphorus, 2.3–4.5 mg/dL; vitamin D (25(OH)D), >30 ng/mL; ALP, 120–360 IU/L; 24-hr urine calcium, 50–200 mg/day.

FP, focused parathyroidectomy; CP, conventional parathyroidectomy; PTH, parathyroid hormone; BMD, bone mineral density (T-score from L-spine).