| Recruiting | N/A | 288 | Europe | Preoperative HbA1c | University of Thessaly, University Hospital, Ioannina, Larissa University Hospital | Neurocognitive Disorders, HbA1c | 09/21 | 11/21 | | |
| Recruiting | N/A | 288 | Europe | NLR, PLR | University of Thessaly, University Hospital, Ioannina, Larissa University Hospital | Neurocognitive Disorders, Neutrophil-Lymphocyte Ratio, Platelet-Lymphocyte Ratio | 12/21 | 12/21 | | |