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Trial |
Study Group |
Mean Follow-up |
Rate of New Neurologic Events |
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|
Medical Rx |
Surgical Rx |
|
ECST |
Symptomatic |
3 years |
16.8% |
10.3% |
|
NASCET |
Symptomatic |
2.7 years |
26% |
9% |
|
Veterans Affairs |
Symptomatic |
1 year |
19.45% |
7.7% |
|
CASANOVA |
Asymptomatic |
3.5 years |
11.3% |
10.7% |
|
Mayo Clinic |
Asymptomatic |
2 years |
11% |
11% |
|
Veterans Affairs |
Asymptomatic |
4 years |
20.6% |
8.0% |
|
ACAS |
Asymptomatic |
2.7 years |
11% |
5.1% |
Table 2. Comparative results of seven major prospective randomized trials
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