Table 1 Characteristics of study participants (n = 6627)

Age(years)

0.76 ± 0.30

2.6 ± 0.48

4.6 ± 0.71

9.42 ± 2.3

Gender(M/F)

814/728

1304/1117

869/701

544/550

BMI(kg/m²)

15.8 ± 1.6

16.7 ± 2.09

17.8 ± 1.5

21.36 ± 2.6

PTH(pg/mL)

26.11 ± 11.47

28.67 ± 11.28

24.75 ± 9.4

39.9 ± 11

Ca²⁺(mmol/L)

2.37 ± 0.42

2.39 ± 0.08

2.37 ± 0.05

2.4 ± 0.09

TSH(µIU/mL)

1.65 ± 0.93

2.42 ± 1.0

2.18 ± 0.79

2.48 ± 1.24

PCT(µg/L)

0.18 ± 0.05

0.23 ± 0.12

0.22 ± 0.11

0.18 ± 0.07