Summary of the patients’ raw scores and completion times on the neurocognitive tests
| Preoperative measurement Mean (SD) Median | Postoperative measurement Mean (SD) Median | P value* | |
| VVLT total word count | 22.3 (5.0) Med: 22.0 | 25.3 (5.9) Med: 25.5 | <0.05 |
| VVLT delayed recall, total word count | 8.1 (2.6) Med: 8.0 | 9.1 (3.2) Med: 9.5 | <0.05 |
| CST, time (s), part C | 38.8 (14.8) Med: 33.1 | 36.9 (13.5) Med: 35.4 | 0.49 |
| CST, number of errors, part C | 1.4 (2.7) Med: 0 | 1.1 (2.2) Med: 0 | 0.42 |
| Letter-Digit Coding Test, score | 27.4 (5.9) Med: 28 | 27.9 (7) Med: 30 | 0.39 |
| SCW, time (s), part 3 | 51.4 (19.2) Med: 47.5 | 50.3 (22.1) Med: 43,8 | 0.15 |
| SCW, number of errors | 0.6 (1) Med: 0 | 0.9 (1,9) Med: 0 | 0.22 |
*Wilcoxon signed-rank test.
CST, Concept Shifting Task; SCW, Stroop Colour-Word Test; VVLT, Visual Verbal Learning Test.