Table 5 Quality of evidence
Quality rating | Criteria |
|---|---|
High | Consistent findings in multiple studies of at least good quality OR one study of excellent quality AND a total sample size of ≥100 patients |
Moderate | Conflicting findings in multiple studies of at least good quality OR consistent findings in multiple studies of at least fair quality OR one study of good quality AND a total sample size of ≥50 patients |
Low | Conflicting findings in multiple studies of at least fair quality OR one study of fair quality AND a total sample size of ≥30 patients |
Very low | Only studies of poor quality OR a total sample size of <30 patients |
Unknown | No studies |