Table 1 Baseline characteristics of study patients

Total patients number, n (%)

92 (100%)

Median age (range), y.o

56.0 (21–73)

Number of females/males, n (%)

88 (95.7)/ 4(4.3)

Median BMI (range), kg/m²

25.4 (19.3–45.4)

Median preoperative Ca²⁺(range), mmol/L

1.45 (1.12–1.82)

Median preoperative p-PTH (range), pmol/L

15.4 (7.2–84.5)

Clinical types of PHPT*, n (%)

 “Asymptomatic”

26 (28.3)

 Symptomatic

66 (71.7)

Hypercalcaemia, n (%)

 Normocalcemia or mild (Ca²⁺  < 1.49 mmol/L)

58 (63.0)

 Moderate (Ca²⁺  = 1.5 -1.79 mmol/L)

31 (33.7)

 Severe (Ca²⁺  ≥ 1.8 mmol/L)

3 (3.3)