Table 2.

Univariate and multivariate logistic regression analysis for predictors of outcome for MVD. Note that ‘MRI NV contact/distortion’, ‘mixed arterial and venous compression’, and ‘severe NVC’ are inter-related (multi-collinear) variables, and therefore only one of each was included per model in the multivariate analysis in conjunction with ‘right side’ [40]. Predictors giving a probability value 0.05 < P < .10 are in italics

Variable	Univariate analysis				Multivariate analysis
		95% CI				95% CI
	Odds ratio	Low	High	P	Odds ratio	Low	High	P
Age	0.995	0.966	1.02	.72
Male sex	1.587	0.779	3.233	.20
Right side	1.723	0.862	3.446	.12	1.603	0.794	3.233	.19
V1 pain	0.966	0.465	2.006	.93
V2 pain	0.659	0.276	1.577	.35
V3 pain	0.737	0.356	1.524	.41
Pre-operative TN duration (years)	1.036	0.972	1.103	.27
MRI NV contact/distortion	2.481	0.829	7.429	.10	2.481	0.821	7.500	.11
Venous compression only	0.561	0.18	1.742	.32
Arterial compression only	1.22	0.552	2.694	.62
Mixed arterial and venous compression	3.279	0.734	14.647	.12	3.253	0.724	14.607	.124
Post-operative numbness	0.77	0.195	3.044	.71
Severe NVC	2.121	0.967	4.65	.06	2.003	0.907	4.421	.086