Results of neuropsychological testing in surgical and non-surgical groups
| Surgical group | Non-surgical group | ||||
|---|---|---|---|---|---|
| Time 1 | Time 2 | Wilcoxon two-tailed test | Time 1 | Time 2 | |
| *p<0.01. RAVLT: Rey auditory verbal learning task; WAIS-R, Wechsler adult intelligence scale-revised; WMS-R, Wechsler memory scale-revised | |||||
| RAVLT total learning | 40.2 (10.1) | 39.7 (9.3) | 0.3815 | 42.9 (6.5) | 45.7 (3.7) |
| RAVLT delayed recall | 6.6 (3.4) | 6 (3.9) | 0.0828 | 7.9 (2.5) | 8.3 (2.5) |
| RAVLT new recognition | 0.86 (0.09) | 0.86 (0.13) | 0.8585 | 0.92 (0.1) | 0.91 (0.1) |
| Benton visual retention test multiple choice | 9.3 (2.6) | 9.1 (2.9) | 0.6623 | 11.1 (2.4) | 12.3 (1.8) |
| Animals | 16.8 (4.2) | 15.5 (5.1) | 0.2052 | 17.3 (5.5) | 16.6 (2.9) |
| Controlled oral word association task | 40.4 (15) | 40 (14) | 0.5753 | 36.5 (7.6) | 35.7 (14.5) |
| Boston naming test 31 item | 20.9 (6.1) | 21.9 (5.4) | 0.0201 | 27.5 (2.4) | 29 (1.1) |
| WAIS-R block design | 20.1 (12.5) | 19.9 (11.7) | 0.8136 | 24.4 (8.3) | 27 (10.9) |
| WAIS-R digit span | 14.2 (3.9) | 15.1 (3.2) | 0.1982 | 17.1 (3.9) | 18.2 (2.3) |
| WMS-R mental control | 5.3 (1.1) | 5.4 (.8) | 0.7055 | 5.6 (0.7) | 5.8 (0.4) |
| Raven's coloured progressive matrices | 26.6 (5.5) | 26.9 (5.5) | 0.9496 | 32.4 (2.4) | 33.7 (0.82) |
| WAIS-R similarities | 16.4 (5.6) | 16.4 (4.7) | 0.6791 | 22.4 (2) | 22.5 (2.3) |
| Tower of London total moves trials 8–12 | 36.1 (8.5) | 46 (14.3) | 0.0087* | 30.9 (3) | 34.5 (7.4) |
| Geriatric depression scale | 11.5 (6.2) | 9.4 (6.4) | 0.1188 | 8.9 (7.6) | 5 (3.9) |