Table 2 Pooled odds ratio for operative fixation versus conservative treatment in the meta-analysis
Subgroups | Sample size | Number of studies | Random model | Test of heterogeneity | Egger's test for publication bias | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Case | Control | OR (95% CI) | Z | p value | Q | p value | I2(%) | t | p value | ||
Overall effects | 142 | 149 | 7 | 1.42 (0.33–6.11) | 0.47 | 0.64 | 16.68 | 0.01 | 64 | 1.52 | 0.19 |
Study design | |||||||||||
Retrospective | 109 | 78 | 4 | 0.73 (0.15–3.55) | 1.21 | 0.23 | 6.89 | 0.08 | 56 | 0.99 | 0.43 |
Prospective | 26 | 27 | 2 | 1.03 (0.17–6.40) | 0.03 | 0.98 | 0.92 | 0.34 | 0.0 | -0.03 | 0.98 |
Sample size | |||||||||||
Sample size ≤40 | 66 | 81 | 5 | 1.36 (0.48–3.86) | 0.60 | 0.55 | 1.86 | 0.76 | 0.0 | 0.30 | 0.79 |
Sample size >40 | 102 | 87 | 3 | 1.52 (0.10–24.11) | 0.29 | 0.77 | 14.35 | 0.001 | 86.1 | - | - |
Ethnicity | |||||||||||
European | 122 | 134 | 6 | 1.60 (0.30–8.51) | 0.55 | 0.58 | 16.64 | 0.005 | 70 | 1.62 | 0.18 |
Asian | 20 | 15 | 1 | 0.74 (0.04–12.82) | 0.21 | 0.83 | - | - | - | - | - |
Operative approaches | |||||||||||
Plate fixation | 89 | 39 | 2 | 0.20 (0.05–0.76) | 2.35 | 0.019 | 1.01 | 0.315 | 0.8 | - | - |
Tension band wiring fixation | 27 | 26 | 2 | 1.77 (0.41–7.70) | 0.76 | 0.445 | 0.20 | 0.657 | 0.0 | - | - |
Others | 26 | 84 | 3 | 4.01 (0.31–45.26) | 1.07 | 0.285 | 5.68 | 0.058 | 64.8 | 0.03 | 0.983 |