| Manual Planning* | CAP* | Estimated Difference (Manual-CAP) | Error | P value | |
| Electrode Length (mm, 1 dp) | 57.9 (21.8) | 53.9 (15.6) | 4.74 | 1.59 | <0.05 |
| Angle of Entry (degrees off perpendicular, 1 dp) | 16.2 (12.8) | 13.0 (7.6) | 5.89 | 1.07 | <0.05 |
| Risk (normalised units, 2 dp) | 0.41 (0.79) | 0.36 (0.42) | 0.19 | 0.03 | <0.05 |
| Minimum Distance from Blood Vessel (mm, 1 dp) | 4.5 (3.0) | 4.5 (3.0) | -0.56 | 0.2 | <0.05 |
| Proportion of Intracerebral Electrode in Grey Matter (2 dp) | 0.33 (0.33) | 0.48 (0.28) | -0.11 | 0.02 | <0.05 |