Table 2.
Summary of RRs and WMDs with 95% CIs in the meta-analysis.
| Analysis item | Number of studies included | RR/WMD (95% CI) | p value | Heterogeneity | Model | |
|---|---|---|---|---|---|---|
| I2 (%) | p value | |||||
| Efficacy | ||||||
| Reoperation rates | 10 | 0.53 (0.34, 0.84) | 0.006 | 17 | 0.29 | Fixed-effects |
| Mortality | 9 | 0.81 (0.60, 1.09) | 0.17 | 0 | 0.94 | Fixed-effects |
| Harris hip scores at 1 year | 5 | 3.81 (0.87, 6.74) | 0.03 | 73 | 0.005 | Random-effects |
| Harris hip scores at 3 or 4 years | 5 | 10.07 (6.92, 13.21) | < 0.001 | 85 | < 0.001 | Random-effects |
| Complications | ||||||
| Dislocations | 11 | 1.99 (1.26, 3.15) | 0.003 | 5 | 0.39 | Fixed-effects |
| Local infections | 8 | 1.60 (0.74, 3.46) | 0.23 | 0 | 0.79 | Fixed-effects |
| General complications | 9 | 1.15 (0.91, 1.45) | 0.25 | 0.23 | 0.23 | Fixed-effects |
RR = risk ratio; WMD = weighted mean difference.