. Author manuscript; available in PMC: 2017 Sep 1.

Published in final edited form as: Otol Neurotol. 2016 Sep;37(8):1016–1023. doi: 10.1097/MAO.0000000000001125

Table 3.

Multivariate logistic regression analyzing factors that impact scalar electrode location. When controlling for cochlear volume and angular insertion depth, electrode type and surgical approach were independently predictive of scalar electrode location.

Scala Vestibuli Insertion	Odds Ratio	95% Confidence Interval	p value
Cochlear Volume (mm³)	0.98	0.95 – 1.02	0.39
Angular Insertion Depth (°)	0.99	0.99 – 1.00	0.26
Electrode Type
Lateral Wall	Reference
Perimodiolar	22.40	6.28 – 79.96	<0.001
Mid Scala	54.96	9.66 – 312.82	<0.001
Surgical Approach
Cochleostomy	Reference
Round Window	0.29	0.11 – 0.77	0.01
Extended Round Window	0.28	0.12 – 0.69	0.006