Table 3.
The GRADE ranking of available evidence.
| Certainty Assessment | № of Patients | Effect | Certainty | Importance | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| № of Studies | Study Design | Risk of Bias | Inconsistency | Indirectness | Imprecision | Other Considerations | TAD | Other Treatment Methods | Relative (95% CI) |
Absolute (95% CI) |
||
| Overbite | ||||||||||||
| 10 | Observational studies | Not serious | Serious a | Not serious | Not serious | None | 122 | 121 | - | MD 0.45 lower (0.87 lower to 0.03 lower) |
⨁⨁⨁◯ Moderate |
|
| Overjet | ||||||||||||
| 8 | Observational studies | Not serious | Serious a | Not serious | Not serious a | None | 96 | 91 | - | MD 0.07 lower (0.72 lower to 0.58 higher) |
⨁⨁⨁◯ Moderate |
|
CI: confidence interval; MD: mean difference. Explanations, a. The test of heterogeneity for this outcome is high.