Table 2.
Descriptive statistics and evidence grading of the included meta-analyses of oral interventions
| Dental Treatment | Endodontic Treatment | Mandibular advancement | Periodontal Treatment | |
|---|---|---|---|---|
| Number of meta-analyses | 4 | 1 | 2 | 172 |
| Number of studies, median (min-max) | 3.5 (2–15) | 3 | 10 (10–10) | 5 (2–25) |
| Number of participants, median (min-max) | 899 (426–2,163) | 100,701 | 450 (400–500) | 475.5 (46–7,335) |
| Meta-analytical criterion, n (%) | ||||
| P value <10−6, n (%) | 0 (0) | 1 (100.0) | 1 (50.0) | 32 (18.6) |
| P value <10−3, n (%) | 0 (0) | 0 (0) | 0 (0) | 23 (13.4) |
| P value <0.05, n (%) | 0 (0) | 0 (0) | 0 (0) | 29 (16.9) |
| I2 >50%, n (%) | 1 (25.0%) | 0 (0) | 2 (100.0) | 98 (57.0) |
| I2 ≤25%, n (%) | 2 (50.0%) | 0 (0) | 0 (0.0) | 57 (33.1) |
| Overall grading, n (%) | ||||
| Not significant | 4 (100.0) | 0 (0) | 1 (50.0) | 89 (51.7) |
| Weak | 0 (0) | 0 (0) | 1 (50.0) | 68 (39.5) |
| Suggestive | 0 (0) | 0 (0) | 0 (0) | 3 (1.7) |
| Highly suggestive | 0 (0) | 0 (0) | 0 (0) | 11 (6.4) |
| Strong | 0 (0) | 1 (100.0) | 0 (0) | 1 (0.6) |