Table 4.
GRADE assessment for quality of evidence.
| Outcome | Downgrade | Upgrade | Overall quality | ||||
|---|---|---|---|---|---|---|---|
| Study limitations | Imprecision | Inconsistency | Indirectness | Publication bias | |||
| SNA | Serious | None | Serious | None | None | None | 3 (Low) |
| SNB | Serious | None | Very serious | None | Serious | None | 1 (Very low) |
| ANB | Serious | Serious | Very serious | None | None | None | 1 (Very low) |
| Mandibular plane angle | Serious | None | None | None | Serious | None | 3 (Low) |
| A-OLp | Serious | None | None | None | Serious | None | 3 (Low) |
| Pg-OLp | Serious | Serious | Very serious | None | None | None | 1 (Very low) |
| Co-Go | Serious | None | None | None | None | None | 4 (Low) |
| Co-Gn | Serious | None | Serious | None | None | None | 3 (Low) |
| Overjet | Serious | None | Very serious | None | None | None | 2 (Low) |
| Overbite | Serious | None | Very serious | None | None | None | 2 (Low) |
| Molar relationship | Serious | None | Very serious | None | None | None | 2 (Low) |