| Recommendation 2.1 | Quality of the evidence | Strength of recommendation |
| We recommend evaluating the following preoperative risk factors for POD: (1) older age, (2) American Society of Anesthesiology Physical status score > 2, (3) Charlson Comorbidity Index ≥2 and (4) Mini Mental State Examination score lower than 25 points |
Moderate | Strong |
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