Key result
Preoperative carotid angiography use declines ~31% during the Asymptomatic Carotid Surgery Trial.
Why the study?
The changing practice and selective use of carotid angiography in the Asymptomatic Carotid Surgery Trial was not well described.
How has the use of preoperative carotid angiography changed over time in the Asymptomatic Carotid Surgery Trial?
Observational (n=1,141)
Yes
How has the use of preoperative carotid angiography changed over time in the Asymptomatic Carotid Surgery Trial?
Absolute Event Rate: 61% vs 42%
p-value: p=<0.001
The use of preoperative carotid angiography in the Asymptomatic Carotid Surgery Trial has become increasingly selective and decreased significantly over time.
No takes yet. Share an insight, caveat, or question.
Declining angiography use in ACST supports selective noninvasive imaging; leaves open effects on trial outcomes and contemporary practice.
Robless et al. (1999) conducted an observational in Asymptomatic carotid stenosis (n=1,141). Preoperative carotid angiography vs. No angiography was evaluated on Use of carotid angiography at randomization (p=<0.001). The use of preoperative carotid angiography in the Asymptomatic Carotid Surgery Trial decreased significantly from 61% of randomized patients in 1993 to 42% in 1996 and 1997 (P<0.001).
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