. Author manuscript; available in PMC: 2016 Dec 1.

Published in final edited form as: J Neurosurg. 2015 Dec 4;124(6):1820–1828. doi: 10.3171/2015.6.JNS15487

TABLE 3. Statistical comparison between manual planning and CAP.

Measurement	Manual Planning^*	CAP^*	Estimated Difference (Manual – CAP)	Error	p Value
Electrode length (mm, 1dp)	57.9 (21.8)	53.9 (15.6)	4.74	1.59	<0.05
Angle of entry (° off perpendicular, 1dp)	16.2 (12.8)	13.0 (7.6)	5.89	1.07	<0.05
Risk (normalized units, 2dp)	0.41 (0.79)	0.36 (0.42)	0.19	0.03	<0.05
Minimum distance from blood vessel (mm, 1dp)	4.5 (3.0)	4.5 (3.0)	−0.56	0.20	<0.05
Proportion of intracerebral electrode in gray matter (2dp)	0.33 (0.33)	0.48 (0.28)	−0.11	0.02	<0.05

dp = decimal place.

Values are median (IQR).