Individual postoperative changes of cognitive, behavioural, and functional variables in the 20 patients with a 12 month follow up
| Improvement (SD >+1) | No change (SD +1 to −1) | Decline (SD < −1) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Variable | 3 Months | 6 Months | 12 Months | 3 Months | 6 Months | 12 Months | 3 Months | 6 Months | 12 Months | ||
| ADL-UPDRS, activities of daily living subscale of the unified Parkinson’s disease rating scale; MMSE, mini-mental state examination; MWCST, modified Wisconsin card sorting test; PDQL, Parkinson’s disease quality of life questionnaire. | |||||||||||
| MMSE | 35% | 25% | 40% | 55% | 75% | 55% | 10% | 0% | 5% | ||
| Raven’s progressive matrices ’47 | 20% | 25% | 25% | 60% | 45% | 50% | 20% | 30% | 25% | ||
| Rey’s immediate recall | 5% | 20% | 30% | 55% | 55% | 50% | 40% | 25% | 20% | ||
| Rey’s delayed recall | 15% | 15% | 40% | 45% | 60% | 35% | 40% | 25% | 25% | ||
| Digit span forward | 5% | 15% | 10% | 80% | 75% | 70% | 15% | 10% | 20% | ||
| Digit span backward | 25% | 40% | 30% | 35% | 25% | 40% | 40% | 35% | 30% | ||
| Corsi’s span forward | 45% | 35% | 30% | 50% | 65% | 65% | 5% | 0% | 5% | ||
| Corsi’s span backward | 25% | 15% | 10% | 70% | 75% | 85% | 5% | 10% | 5% | ||
| Letter verbal fluency | 0% | 10% | 0% | 74% | 63% | 79% | 26% | 26% | 21% | ||
| MWCST: No of criteria | 0% | 0% | 0% | 83% | 89% | 83% | 17% | 11% | 17% | ||
| MWCST: total errors | 33% | 33 % | 39% | 55% | 61% | 50% | 11% | 6% | 11% | ||
| MWCST: perseverative errors | 39% | 33% | 44% | 61% | 67% | 44% | 0% | 0% | 11% | ||
| Zung’s depression scale | 76% | 58% | 65% | 12% | 25% | 29% | 12% | 17% | 6% | ||
| Zung’s anxiety scale | 50% | 37% | 47% | 37% | 50% | 47% | 12% | 12% | 6% | ||
| ADL-UPDRS, off drug treatment | 100% | 100% | 100% | 0% | 0% | 0% | 0% | 0% | 0% | ||
| ADL-UPDRS, on drug treatment | 0% | 10% | 5% | 95% | 90% | 95% | 5% | 0% | 0% | ||
| PDQL | 75% | 75% | 69% | 6% | 19% | 25% | 19% | 6% | 6% | ||