Table 1 Level of evidence for identification of risk factors for postoperative delirium
From: Risk factors for delirium after on-pump cardiac surgery: a systematic review
Level of evidence | Criteria |
|---|---|
Strong | Consistent findings (≥75 %) in ≥ 2 high-quality articles |
Moderate | Consistent findings (≥75 %) in 1 high-quality article and ≥1 acceptable-quality article or ≥3 acceptable or low-quality articles. |
Inconclusive | Inconsistent findings irrespective of study quality or 1 high-quality article or <3 acceptable/low-quality articles |
No association | No association in multivariable analysis in high-quality articles and ≥3 high-quality articles with no association in high-quality articles |