Table 4 Relative changes of mean QUS parameters in postmenopausal groups with respect to control group (%)

relative changes of mean speed of sound

Δwl_SOS

—

1.42

1.76

2.40

Δl_SOS

—

1.67

1.88

2.71

Δwn_SOS

—

21.24

20.71

17.28

relative changes of mean normalized broadband ultrasound attenuation

Δwl_nBUA

—

21.88

30.46

39.68

Δl_nBUA

—

22.58

29.04

40.39

Δwn_nBUA

—

35.90

41.03

48.72

relative changes of mean stiffness index

Δwl_STI

—

16.91

17.15

36.61

Δl_STI

—

18.54

24.12

35.35

Δwn_STI

—

34.30

37.79

45.35