Unilateral and bilateral performance of the two groups on the tapping and peg placement tasks (mean (SD))
| Controls (n=26) | PD (n=40) | t(df) | p Value | |
|---|---|---|---|---|
| Peg placement: | ||||
| Unimanual (PEGU) | 29.2 (3.6) | 15.7 (6.9) | t(61.2)1-150=10.4 | <.0001 |
| Bimanual (PEGB) | 23.8 (4.3) | 10.5 (5.8) | t(62.6)1-150=10.7 | <.0001 |
| PEGU−PEGB | 5.5 (2.8) | 5.3 (3.7) | t(64.0)=0.25 | >.10 |
| PEGB as % PEGU | 81.2 (9.3) | 66.6 (24.3) | t(54.2)1-150=3.4 | <.001 |
| Tapping: | ||||
| Unimanual (TAPU) | 299.8 (64.8) | 201.0 (60.8) | t(64.0)=6.3 | <.0001 |
| Bimanual (TAPB) | 292.7 (59.9) | 180.3 (63.8) | t(64.0)=7.2 | <.0001 |
| TAPU−TAPB | 7.1 (19.4) | 20.7 (13.3) | t(64.0)=−2.4 | <.05 |
| TAPB as % TAPU | 98.3 (7.6) | 89.2 (13.3) | t(63.1)1-150=3.5 | <.01 |
| Combined tasks: | ||||
| PEGC | 26.9 (4.1) | 15.7 (7.2) | t(62.9)1-150=8.1 | <.0001 |
| PEGU−PEGC | 2.3 (2.8) | 0.0 (3.3) | t(64.0)=2.9 | <.01 |
| PEGC as % PEGU | 92.4 (9.3) | 104.6 (38.1) | t(45.9)1-150=−1.9 | <.06 |
| TAPC | 237.8 (74.1) | 96.9 (50.3) | t(39.9)1-150=8.5 | <.0001 |
| TAPU−TAPC | 61.9 (45.8) | 104.1 (47.7) | t(64.0)=−3.6 | <.001 |
| TAPC as % TAPU | 78.7 (14.9) | 47.2 (17.9) | t(64.0)=7.4 | <.0001 |
| PEGU−PEGC (subjects (%)): | ||||
| Improvement (PEGC>PEGU) | 11.5 | 42.5 | ||
| Change (PEGC=PEGU) | 15.4 | 10.0 | χ2(2)=7.2 | <.05 |
| Deterioration (PEGC<PEGU) | 73.1 | 47.5 | ||
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↵1-150 t Value and df calculated for samples with unequal variance. p Values for two tailed test.
