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. Author manuscript; available in PMC: 2016 Feb 1.
Published in final edited form as: J Neurosurg. 2015 Apr 24;123(2):307–313. doi: 10.3171/2014.10.JNS141662

Table 1.

Demographics of participants.

Age, median (interquartile range) Sex, male:female Handedness, right:left
No image guidance (n=10) 24 (22 – 25) 4:6 8:2
Triplanar display (n=10) 23.5 (21 – 26.5) 4:6 10:0
Always-on solid overlay (n=10) 24.5 (22.3 – 25) 6:4 10:0
Always-on wire mesh overlay (n=10) 21.5 (20.3 – 24) 4:6 9:1
On-demand inverse realism overlay (n=10) 23.5 (22 – 24.5) 5:5 10:0
All groups (n=50) 23.5 (21.3 – 25) 23:27 47:3
p 0.664 0.863 0.225