Table 3.
Meta‐analysis for BOP (%)
| Group | Subgroups | n | Weighted mean difference (WMD) | Heterogeneity | ||||
|---|---|---|---|---|---|---|---|---|
| DL (%) | 95% CI (%) | p‐Value | I 2 (%) | p‐Value | ||||
| Upper | Lower | |||||||
| All | 10 | −3.338 | −9.840 | 3.165 | .314 | 64.1 | .003 | |
| Material (All) | 7 | −6.842 | −16.702 | 3.017 | .174 | 72.2 | <.001 | |
| Metal vs. Alu | ||||||||
| All | 4 | 11.041 | −7.242 | 9.270 | .810 | 62.5 | .046 | |
| Ti vs. Alu | 3 | 4.833 | −3.984 | 13.650 | .283 | 29.2 | .244 | |
| Gold vs. Alu | 1a | −4.240 | −8.867 | 0.387 | .072 | |||
| Ti vs. Zir | 3 | −26.961 | −45.000 | −8.922 | .003 | 33.8 | .221 | |
| Macroscopic design | 1a | 15.000 | −44.468 | 14.468 | .318 | |||
| Surface topography | 1a | 14.880 | −10.057 | 39.817 | .242 | |||
| Surface manipulation | 1a | 0.000 | −4.452 | 4.452 | 1.0 | |||
N, number of studies; Ti, titanium; Alu, alumina; CI, confidence interval; vs., versus; DL, DerSimonian & Laird method; I2, heterogeneity index.
a
Mean difference instead of weighted mean difference, as it is based on only one study.