Table 1.
Characteristics of studies included in the meta-analysis
| 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.