Comparison of initial and three month follow up language assessment scores in the bilateral subthalamic nucleus deep brain stimulation (STN-DBS) and non-surgical Parkinson’s disease (NSPD) groups
| Test variable | STN-DBS (n = 5) | NSPD (n = 16) | ||||||
|---|---|---|---|---|---|---|---|---|
| Initial assessment score (mean (SD)) | Three month follow up assessment score (mean (SD)) | t | p Value | Initial assessment score (mean (SD)) | Three month follow up assessment score (mean (SD)) | t | p Value | |
| *Significant at p<0.003 after Bonferroni adjustment. | ||||||||
| ACCFH, accuracy few/high words; ACCFL, accuracy few/low words; ACCMH, accuracy many/high words; ACCML, accuracy many/low words; ACCLNW, accuracy legal non-words; animals, animal fluency; BNT, Boston naming test; NCCEATOT, Neurosensory Centre comprehensive examination for aphasia total score; RTFH, reaction time few/high words; RTFL, reaction time few/low words; RTLNW, reaction time legal non-words; RTMH, reaction time many/high words; RTML, reaction time many/low words; TLCETOT, test of language competence expanded total score; tools, tool fluency; TWTRTOT, the word test revised total score; WSTLC, Wiig-Semel test of linguistic concepts total score. | ||||||||
| NCCEATOT | 514.7 (30.2) | 518.3 (40.1) | −0.59 | 0.586 | 544.5 (15.7) | 551.8 (21.2) | −2.50 | 0.025 |
| BNT | 45.6 (6.2) | 48.6 (6.7) | −1.20 | 0.298 | 51.8 (5.7) | 52.7 (4.3) | −1.21 | 0.246 |
| Tools | 12.6 (3.0) | 11.0 (5.3) | −1.12 | 0.327 | 13.1 (4.8) | 16.5 (5.0) | −2.94 | 0.011 |
| Animals | 15.2 (5.9) | 14.8 (4.1) | 0.15 | 0.889 | 18.0 (4.3) | 18.6 (3.5) | −0.84 | 0.417 |
| TLCETOT | 139.8 (26.2) | 150.8 (24.7) | −3.57 | 0.023 | 172.4 (19.2) | 178.3 (17.6) | −2.27 | 0.038 |
| TWTRTOT | 73.2 (8.6) | 75.8 (10.9) | −0.92 | 0.412 | 83.0 (4.2) | 83.1 (4.2) | −0.18 | 0.860 |
| TOWK | 21.0 (4.9) | 21.0 (6.4) | 0.00 | 1.000 | 25.4 (2.8) | 25.1 (2.5) | 0.72 | 0.484 |
| WSTLC | 43.8 (2.2) | 44.8 (3.9) | −0.77 | 0.486 | 47.0 (2.1) | 47.0 (3.0) | 0.00 | 1.000 |
| ACC MH | 9.8 (0.5) | 9.5 (1.0) | 0.40 | 0.718 | 9.7 (0.6) | 9.8 (0.5) | −0.37 | 0.718 |
| ACCML | 9.5 (0.6) | 9.3 (1.0) | 0.40 | 0.718 | 9.6 (0.5) | 9.9 (0.3) | −1.46 | 0.164 |
| ACCFH | 9.0 (1.4) | 9.0 (0.8) | 0.00 | 1.000 | 9.6 (0.7) | 9.4 (0.8) | 0.72 | 0.485 |
| ACCFL | 10.0 (0.0) | 8.0 (2.0) | 2.00 | 0.139 | 9.6 (0.6) | 9.7 (0.7) | −0.44 | 0.669 |
| ACCLNW | 28.5 (19.0) | 32.3 (4.3) | −0.91 | 0.430 | 33.6 (10.4) | 31.5 (13.3) | 0.53 | 0.602 |
| RTMH | 1025.8 (915.1) | 1281.1 (1200.4) | −4.51 | 0.000* | 871.2 (383.8) | 835.9 (262.5) | 1.32 | 0.191 |
| RTML | 922.6 (212.4) | 1219.1 (893.1) | −2.45 | 0.019 | 891.4 (386.2) | 849.7 (338.7) | 1.29 | 0.200 |
| RTFH | 1095.4 (212.4) | 1331.1 (804.9) | −2.29 | 0.028 | 1036.9 (1539.9) | 866.0 (275.5) | 1.40 | 0.165 |
| RTFL | 920.3 (354.8) | 1104.4 (380.9) | −3.38 | 0.002* | 847.3 (335.9) | 860.3 (436.0) | −0.43 | 0.671 |
| RTLNW | 1214.6 (737.2) | 1584.2 (840.4) | −12.32 | 0.000* | 1182.9 (850.7) | 113.0 (626.3) | 1.75 | 0.080 |