Table 4:
Frequency of collateral scores
Scan Type
Collateral Score
a
Total
0
1
2
3
CV
23
17
27
11
78
MRV
6
23
33
16
78
Total
29
40
60
27
156
P
= .002 by paired Wilcoxon test, MRV scores > CV scores
a
Scores: 0, none; 1, mild; 2, moderate; and 3, severe.