Table 4 Different anchor density groups comparisons

 Patients

16 (2M&14F)

73 (7M&66F)

38 (8M&30F)

 Anchor density

1.31 ± 0.07

1.55 ± 0.08

1.83 ± 0.10

< 0.001

 Fused level

10.6 ± 2.1

10.5 ± 2.1

8.4 ± 1.7

< 0.001

 Flexibility (%)

32.0 ± 12.6

35.5 ± 20.8

38.9 ± 18.4

0.45

 Correction rate (%)

64.3 ± 9.8

64.1 ± 9.5

63.9 ± 11.3

0.99

 Correction index

2.5 ± 1.8

3.8 ± 6.5

2.4 ± 2.4

0.36

 TK correction

-1.9° ± 8.8°

3.9° ± 9.7°

7.3° ± 9.1°

0.005

 LL correction

2.4° ± 13.3°

2.5° ± 9.8°

2.1° ± 12.3°

0.99

 AVR correction

0.7 ± 0.6

0.9 ± 0.6

0.8 ± 0.7

0.60

 AVT correction (mm)

29.2 ± 13.2

25.7 ± 11.4

26.5 ± 11.9

0.57

 Patients

16 (2M&14F)

54 (5M&49F)

20 (4M&16F)

 Anchor density

1.31 ± 0.07

1.54 ± 0.07

1.84 ± 0.10

< 0.001

 Fused level

10.6 ± 2.1

10.4 ± 2.0

8.5 ± 0.9

< 0.001

 Flexibility (%)

32.0 ± 12.6

33.2 ± 18.7

30.9 ± 16.0

0.88

 Correction rate (%)

64.3 ± 9.8

62.4 ± 9.1

62.8 ± 9.1

0.77

 Correction index

2.5 ± 1.8

3.7 ± 6.5

3.1 ± 3.1

0.73

 TK correction

-1.9° ± 8.8°

4.1° ± 9.6°

6.9° ± 6.5°

0.01

 LL correction

2.4° ± 13.3°

3.5° ± 10.6°

-0.5° ± 11.9°

0.42

 AVR correction

0.7 ± 0.6

0.8 ± 0.5

0.6 ± 0.5

0.19

 AVT correction (mm)

29.2 ± 13.2

24.7 ± 11.2

21.9 ± 11.6

0.18

 Patients

10 (1M&9F)

31 (3M&28F)

18 (3M&15F)

 Anchor density

1.33 ± 0.06

1.53 ± 0.07

1.82 ± 0.09

< 0.001

 Fused level

9.2 ± 0.9

9.1 ± 1.2

8.3 ± 0.8

0.03

 Flexibility (%)

33.3 ± 13.6

39.1 ± 19.4

32.3 ± 15.5

0.37

 Correction rate (%)

66.5 ± 9.2

62.6 ± 10.2

63.7 ± 8.1

0.53

 Correction index

2.5 ± 1.8

3.4 ± 7.8

2.5 ± 1.4

0.85

 TK correction

-3.6° ± 9.1°

6.6° ± 10.5°

7.0° ± 6.4°

0.008

 LL correction

-2.3° ± 9.7°

4.8° ± 10.2°

-1.7° ± 11.9°

0.06

 AVR correction

0.8 ± 0.6

0.8 ± 0.5

0.6 ± 0.5

0.24

 AVT correction (mm)

27.8 ± 12.0

25.0 ± 10.4

22.9 ± 109

0.52