Scores in the executive function tasks
| Variable | Healthy controls | Before surgery | After surgery |
|---|---|---|---|
| Values are mean (SD). | |||
| Mann-Whitney test: *p<0.05, **p<0.01; Wilcoxon for repeated measures test †p<0.05, ††p<0.01. | |||
| Word fluency | |||
| Phonemic | 19.03 (4.68) | 14.89 (4.61)** | 12.67 (4.70)†† |
| Semantic | 22.92 (4.58) | 19.75 (4.92) | 17 (4.13) |
| Alternating | 17.25 (4.51) | 13.83 (2.92)** | 11.91 (3.09)† |
| Stroop word colour test | |||
| Time to complete phase 1 (s) | 28.67 (4.79) | 37.58 (8.57)** | 38.25 (5.66) |
| Time to complete phase 2 (s) | 49.75 (7.77) | 67.92 (16.77)** | 73.25 (21.43) |
| Interference cost index | 21.08 (4.35) | 30.33 (14.06)** | 35 (18.26) |
| Letter number sequencing task | |||
| Errors | 0 | 1.08 (0.99)** | 0.83 (1.19) |
| Alternation cost index | 15.04 (4.35) | 26.87 (14.79)* | 32.25 (30.29) |
| Crossed tapping test | |||
| Errors | 0.25 (0.62) | 3.08 (6.28)** | 4.66 (8.74) |
| Backward digit span | |||
| Score/14 | 7.33 (1.67) | 5.67 (2.23)* | 3.5 (1.31) |