TABLE 3.

Multivariate linear regression on dependent outcome CVC50 in all participants with complete measurements (n = 120)

	Independent Variable	Coefficient	95% Confidence Interval		p
1	Age at implantation	−0.30	−0.67	0.07	0.11
2	Level of education (cat.)
	<BSc	Ref.
	≥BSc	0.15	−10.04	10.28	0.98
3	Years of hearing loss	−0.01	−0.30	0.28	0.93
4	Preoperative CVC—phoneme score*	0.14	−0.16	0.44	0.35
5	Preoperative PTA3	0.17	−0.20	0.54	0.37
6	Postoperative PTA3	−0.19	−0.65	0.26	0.40
7	Electrode type
	Precurved	Ref.
	Straight	−11.79	−20.42	−1.39	0.03
8	Scalar trajectory (cat.)
	All scala tympani	Ref.
	All scala vestibuli	−1.00	−11.26	9.66	0.87
	Translocation	−0.53	−9.70	8.84	0.92

Participants with missing data were excluded from the model (n = 9); four were excluded due to inability to score scalar location because of poor-quality CT scan due to movement artifacts, three were excluded due to missing CVC50 outcome measurement, and two were excluded for both reasons. The proportion of variance explained by the model in this table was 11%, the degrees of freedom were 9, 110, and 119, respectively, for the model, the residual and the total.

*This is 1 factor (Pre-operative CVC-phoneme score). The significance is just like with all other factors in final column of the table (p = 0.35).

BSc, Bachelor of Science; CVC, consonant–vowel–consonant; PTA3, pure-tone average (in dB) over.