Overall driving score and types of driving errors made by the two groups as assessed by the occupational therapist
| Driving scores | Participant groups | Statistics | ||
|---|---|---|---|---|
| Controls | Parkinson’s | t Value | p Value | |
| Values are mean (SD). | ||||
| Overall score % | 83.95 (1.61) | 77.18 (2.15) | 2.43 | 0.02 |
| Critical errors | 0.38 (0.17) | 1.12 (0.36) | −1.75 | 0.09 |
| Observation errors | 3.14 (0.63) | 5.04 (0.93) | −1.62 | 0.11 |
| Blind spot errors | 5.19 (0.66) | 7.52 (0.74) | −2.30 | 0.03 |
| Indicator errors | 6.09 (0.58) | 6.80 (0.77) | −0.71 | 0.48 |
| Brake/accelerator errors | 8.19 (1.26) | 9.80 (1.76) | −0.72 | 0.48 |
| Lane keeping errors | 4.62 (1.00) | 10.20 (1.62) | −2.80 | 0.01 |
| Gap selection errors | 3.62 (0.60) | 4.40 (0.63) | −0.89 | 0.38 |
| Approach errors | 8.28 (1.24) | 10.36 (1.57) | −1.00 | 0.32 |
| Directed errors | 27.14 (3.64) | 38.60 (4.40) | −1.96 | 0.06 |
| Self directed errors | 12.00 (1.89) | 15.52 (2.26) | −1.17 | 0.25 |