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. Author manuscript; available in PMC: 2015 May 31.
Published in final edited form as: World Neurosurg. 2014 Aug 1;83(3):261–268. doi: 10.1016/j.wneu.2014.07.043

Table 5.

Statistical analysis of the biopsy yield of the three methods methods in patients with no prior lesion radiation or surgery; no statistical significant difference is seen among three groups.

Comparison Groups OR 95%-CI P value
Frame-based vs. Frameless 2.29 0.47-11.2 .50
Frameless vs. ioMRI 1.24 0.43-3.59 .79
Frame-based vs. ioMRI 2.83 0.56-14.24 .30