Table 1 Clinical data for subjects of different groups

Training set

DLBP

30

42.81 ± 13.37

6.70 ± 1.86

20.60 ± 8.60

CLBP

30

43.05 ± 15.21

5.48 ± 3.61

25.37 ± 11.24

LDH

30

42.58 ± 9.67

7.21 ± 2.37

31.45 ± 9.07

N

30

41.94 ± 7.65

—

—

Blind test set

DLBP

30

43.21 ± 12.89

6.90 ± 1.49

21.30 ± 8.78

CLBP

30

41.35 ± 15.43

5.32 ± 3.51

26.21 ± 10.89

LDH

30

43.32 ± 10.21

7.61 ± 2.42

32.21 ± 9.35

N

30

42.84 ± 9.98

—

—