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Patient characteristics.
| Group C (n = 30) | Group U (n = 30) | P-values | |
|---|---|---|---|
| Gender (male/female) | 12/18 | 14/16 | 0.795 |
| Age (year) | 72.83 ± 5.27 | 71.26 ± 4.95 | 0.849 |
| BMI (kg/m2) | 25.36 ± 0.75 | 25.48 ± 0.54 | 0.905 |
| Education level (year) | 8.65 ± 0.93 | 9.08 ± 0.37 | 0.607 |
| Duration of surgery (min) | 228.53 ± 14.51 | 205.35 ± 9.87 | 0.089 |
| MMSE scores | 27.23 ± 2.05 | 26.36 ± 2.64 | 0.209 |
