Table 4 Results of the forest plots for the fusion rates at the 12- and 24-month follow-ups
Fusion rate | Number of patients | Number of included studies | OR | 95% CI | P value | χ2 | I2 | Effect model |
|---|---|---|---|---|---|---|---|---|
Fusion rate at the 12-month follow-up | 338 | 4 | 1.55 | 0.76, 3.17 | 0.23 | 0.32 | 14% | Random effect |
Fusion rate at the 24-month follow-up | 108 | 2 | 1.47 | 0.52, 4.13 | 0.47 | 0.21 | 36% | Random effect |