Table 1 Anthropometric and demographic data of the patient group

Female/Male

19 (41.3%)/27 (58.7%)

Age (years) at diagnosis

13.9 (13.0 to 14.9)

Age (years) at measurement

14.3 (13.3 to 15.2)

Caucasian

46 (100%)

Height (m)/Z-score

1.64 (1.59 to 1.69)/0.07 (-0.04 to 0.19)

Weight (kg)/Z-score

52.2 (47.5 to 56.9)/-0.31 (-0.51 to -0.10)

BMI (kg/m²)/Z-score

18.9 (17.9 to 20.0)/-1.03 (-1.55 to -0.51) *

Low BMD (Z-score ≤ -1SD)

(2 females, 11 males)

Age (years) at measurement

14.8 (13.1 to 16.4)

BMI (kg/m²)/Z-score

18.7 (16.5 to 20.9)/-1.67 (-3.04 to -0.30) †

Weight (kg)/Z-score

52.2 (43.7 to 60.7)/-0.68 (-1.24 to -0.12) †

Normal BMD (Z-score > -1SD)

(17 females, 16 males)

Age (years) at measurement

14.1 (12.9 to 15.3)

BMI (kg/m²)/Z-score

19.0 (17.7 to 20.4)/-0.44 (-0.89 to 0.0) †

Weight (kg)/Z-score

52.2 (46.2 to 58.1)/-0.20 (-0.43 to 0.02) †

Localisation

(Female/Male)

Upper extremity

4 (8.7%)/6 (13.0%) ∑ 10 (21.7%)

Lower extremity

15 (32.6%)/21 (45.7%) ∑ 36 (78.3%)

   Femur/Tibia

12 (26.1%)/17 (37.0) ∑ 29 (63.0%)

   Pelvis/Fibula

3 (6.5%)/4 (8.7%) ∑ 7 (15.2%)

Total

46 (100%)