Group of BMI

Male

Female

Zhuang people

Jing people

Zhuang people

Jing people

n

BMD (db/MHz)

n

BMD

t

P

n

BMD (db/MHz)

n

BMD

t

P

(db/MHz)

(db /MHz)

Underweight

23

55.54 ± 8.54^*

22

58.55 ± 5.59^**

1.404

0.170

39

48.78 ± 5.20^**

19

56.28 ± 4.23^**

5.269

0.000

Normal weight

187

58.71 ± 8.81

116

64.29 ± 5.93

6.584

0.000

267

53.92 ± 7.90

122

59.91 ± 6.32

7.608

0.000

Overweight

68

61.24 ± 7.52^*

41

63.50 ± 5.65

1.780

0.078

129

56.83 ± 8.17^**

49

63.15 ± 6.45^**

5.47

0.000

Obesity

22

62.08 ± 7.87

53

67.55 ± 4.63^**

3.048

0.005

37

56.87 ± 7.39^**

38

61.93 ± 7.02

2.638

0.010

F = 3.501

-

F = 10.403

-

P = 0.016

-

P < 0.001

-