|
Study
|
Year of publication
|
Country
|
Sample size
|
Follow-up, mo
|
Group A
|
Group B
|
|---|
|
Sample size
|
Age in years (mean ± SD)
|
Male (%)
|
Sample size
|
Age in years (mean)
|
Male (%)
|
|---|
|
Garg et al.[12]
|
2012
|
India
|
70
|
5 to 14
|
36
|
33.6
|
NA
|
34
|
34.9
|
NA
|
|
Lee et al.[11]
|
2006
|
Korea
|
17
|
6 to 42
|
10
|
63.70 ± 5.43
|
4 (40)
|
7
|
49 ± 15.87
|
1 (14)
|
|
Ma et al.[10]
|
2012
|
China
|
157
|
22 to 72
|
83
|
39.8 ± 1.3
|
32 (39)
|
74
|
38.3 ± 1.3
|
33 (45)
|
|
Pu et al.[3]
|
2012
|
China
|
47
|
12 to 62
|
25
|
38.1
|
10 (40)
|
22
|
37.8
|
7 (32)
|
- group A posterior instrumentation group, group B anterior instrumentation group, NA not applicable.
