MRI findings according to patient groups

Type	Group 1 (n = 16)	Group 2 (n = 14)	Group 3 (n = 16)	P Values
AICA
I	7 (43.8%)	7 (50.0%)	13 (81.3%)
II	7 (43.8%)	6 (42.9%)	2 (12.5%)
III	2 (12.5%)	1 (7.1%)	1 (6.3%)
				.803a/.158b/.065c
Neurovascular contact
I	5 (31.3%)	8 (57.1%)	10 (62.5%)
II	8 (50.0%)	6 (42.9%)	6 (37.5%)
III	3 (18.8%)	0 (0%)	0 (0%)
				.130a/.769b/.032c,d

^aP values indicate the results of statistical comparisons between groups 1 and 2 by the Wilcoxon signed rank test.

^bP values indicate the results of statistical comparisons between groups 2 and 3 by the linear association test.

^cP values indicate the results of statistical comparisons between groups 1 and 3 by the linear association test.

^dP values < .05.