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Table 2: Statistical analysis
Grades of Neurovascular Conflict Contrast Enhancement P Values Contrast vs Noncontrast Sensitivity Specificity
Sym vs Asym Sym vs Cntrl Asym vs Cntrl Sym Asym
0 Contrast− .002 .002 .51 1 1 12.3% 66.7%
Contrast+ .002 .003 .51 12.3% 66.7%
1 Contrast− .03 .09 1 0.63 1 40.7% 40.5%
Contrast+ .004 .03 1 35.8% 40.5%
2 Contrast− <.001 <.001 .19 0.07 1 32.1% 94.6%
Contrast+ .06 .01 .19 18.5% 94.6%
3 Contrast− <.001 .03 1 0.001 1 14.8% 100.0%
Contrast+ <.001 <.001 1 33.3% 100.0%
1, 2, or 3 Contrast− .002 .003 .51 1 1 87.7% 35.1%
Contrast+ .002 .002 .51 87.7% 35.1%
2 and 3 Contrast− <.001 <.001 .19 0.64 1 46.9% 94.6%
Contrast+ <.001 <.001 .19 51.9% 94.6%
Note:—Sym indicates symptomatic; Asym, asymptomatic; Cntrl, control; Contrast +, contrast enhancement; Contrast −, no contrast enhancement.

Grades of Neurovascular Conflict	Contrast Enhancement	P Values			Contrast vs Noncontrast		Sensitivity	Specificity
Grades of Neurovascular Conflict	Contrast Enhancement	Sym vs Asym	Sym vs Cntrl	Asym vs Cntrl	Sym	Asym	Sensitivity	Specificity
0	Contrast−	.002	.002	.51	1	1	12.3%	66.7%
	Contrast+	.002	.003	.51			12.3%	66.7%
1	Contrast−	.03	.09	1	0.63	1	40.7%	40.5%
	Contrast+	.004	.03	1			35.8%	40.5%
2	Contrast−	<.001	<.001	.19	0.07	1	32.1%	94.6%
	Contrast+	.06	.01	.19			18.5%	94.6%
3	Contrast−	<.001	.03	1	0.001	1	14.8%	100.0%
	Contrast+	<.001	<.001	1			33.3%	100.0%
1, 2, or 3	Contrast−	.002	.003	.51	1	1	87.7%	35.1%
	Contrast+	.002	.002	.51			87.7%	35.1%
2 and 3	Contrast−	<.001	<.001	.19	0.64	1	46.9%	94.6%
	Contrast+	<.001	<.001	.19			51.9%	94.6%