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Assessment of methodological quality
| Baker, 198915 | Weale, 199612 | Downing, 200116 | Witzleb, 200917 | Teratani, 201018 | Ji, 201219 | |
|---|---|---|---|---|---|---|
| Explicit standardised surgical technique described | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Same implant for both groups | NR | NR | ✗ | ✓ | ✗ | ✓ |
| Same bearing size for both groups | NR | NR | NR | ✓ | NR | ✓ |
| Same rehabilitation protocol for both groups | NR | NR | ✓ | ✓ | NR | ✓ |
| Minimal loss to follow-up | ✓ | ✓ | ✗ | ✓ | ✓ | ✓ |
✓ = robust methodology; ✗ = differences in methodology between the groups exist; NR = not recorded
