Table 2 Inter-group comparison of mobility between G1 and G2 before treatment, at the re-evaluation phase, six months post-GTR or OI, and one year after re-evaluation

G1 at PT^α and Re^∞

G1 at 6^∂

G1at 12^¥

M0

M1

M2

M0

M1

M2

M0

M1

M2

N

%

N

%

N

%

N

%

N

%

N

%

N

%

N

%

N

%

1

10%

7

70%

2

20%

3

30%

6

60%

1

10%

2

20%

6

60%

2

20%

G2 at PT^αand Re^∞

G2 at 6^∂

G2at 12^¥

M0

M1

M2

M0

M1

M2

M0

M1

M2

N

%

N

%

N

%

N

%

N

%

N

%

N

%

N

%

N

%

2

20%

6

60%

2

20%

1

10%

4

40%

5

50%

5

50%

4

40%

1

10%

G1V G2 at PT and re-evaluation

G1 at 6monthspost GTR V

G2 at 6monthspostOI

G1V G2 at one year after re-evaluation

χ2

P

χ2

p

χ2

P

4.103

0.1286ns

40.67

0.0001***

10.91

0.0043**