Table 2. Primary and Secondary Outcomes.
No./total (%) | Incidence difference, % (95% CI)b | Hazard ratio (95% CI)b | P valuec | ||
---|---|---|---|---|---|
Percutaneous transluminal angioplasty and stenting group (n = 176) | Medical therapy alone group (n = 181)a | ||||
Components of the primary outcome | 14/176 (8.0) | 13/181 (7.2) | 0.4 (−5.0 to 5.9) | 1.10 (0.52 to 2.35) | .82 |
Stroke or death within 30 d after enrollmentd | 9/176 (5.1)e | 4/181 (2.2)f | |||
Stroke in territory of qualifying artery beyond 30 d through 1 yd | 5/176 (2.8) | 9/181 (5.0) | |||
Secondary outcomes | |||||
Stroke in the same territory within 2 y | 17/171 (9.9)g | 16/178 (9.0)h | 0.7 (−5.4 to 6.7) | 1.10 (0.56 to 2.16) | .80 |
Stroke in the same territory within 3 y | 19/168 (11.3)i | 19/170 (11.2)j | −0.2 (−7.0 to 6.5) | 1.00 (0.53 to 1.90) | >.99 |
Disabling stroke or death within 3 y | 19/168 (11.3)k | 15/166 (9.0)l | 2.0 (−4.6 to 8.6) | 1.28 (0.65 to 2.52) | .49 |
Any stroke, TIA, cardiovascular events related to stenting or medical therapy within 3 y | 24/169 (14.2)m | 31/172 (18.0)n | −4.1 (−12.0 to 3.7) | 0.76 (0.45 to 1.30) | .31 |
Death within 3 y | 7/160 (4.4)o,p | 2/159 (1.3)q,r | 3.2 (−0.5 to 6.9) | 3.75 (0.77 to 18.13) | .08 |
Stroke-related deathd | 4/160 (2.5) | 2/159 (1.3) | |||
Nonstroke-related deathd | 3/160 (1.9) | 0/159 (0) |
Abbreviation: TIA, transient ischemic attack.
One participant randomized to the medical therapy alone group was not included due to missing outcome data. See Figure 1.
Adjusted for site effect.
Log-rank test adjusted for site effect.
Post hoc analysis.
There were 5 ischemic stroke and 4 hemorrhagic strokes. Of the 4 symptomatic hemorrhagic strokes, 1 was periprocedural subarachnoid hemorrhage immediately after percutaneous transluminal angioplasty and stenting (probably related to guidewire perforation); 1 was periprocedural parenchymal and subdural brain hemorrhage evident immediately after percutaneous transluminal angioplasty and stenting (probably related to guidewire perforation); 1 was cerebellar and occipital hemorrhage that occurred 3 days after percutaneous transluminal angioplasty and stenting (probably related to reperfusion); and 1 was subarachnoid hemorrhage within 24 hours after percutaneous transluminal angioplasty and stenting (probably related to reperfusion). A total of 2 of these hemorrhages were fatal (1 developed massive cerebral infarction and brain hernia, and 1 had parenchymal brain hemorrhage), and 2 were nondisabling (1 cerebellar and occipital hemorrhage and 1 subarachnoid hemorrhage).
There were 4 ischemic strokes and 0 hemorrhagic strokes. Of the 4 ischemic strokes, 2 were disabling, 2 were nondisabling, and none were fatal.
One missing follow-up and 4 died.
Four missing follow-up and 0 died.
Four missing follow-up and 4 died.
Eleven missing follow-up and 1 died.
Eight missing follow-up, including 4 with primary outcomes (but no disabling stroke or death).
Sixteen missing follow-up, including 5 with primary outcomes (but no disabling stroke or death).
Four missing follow-up and 3 died.
Ten missing follow-up and 0 died.
Sixteen missing follow-up, including 12 with primary outcomes.
The causes of death in the percutaneous transluminal angioplasty and stenting group were as follows: brain hemorrhage (n = 2), ischemic stroke (n = 2), sudden cardiac arrest (n = 1), intrahepatic cholangiocarcinoma (n = 1), and aortic artery aneurysm (n = 1).
Twenty-three missing follow-up, including 12 with primary outcomes.
The causes of death in the medical management group were as follows: ischemic stroke (n = 1) and brain hemorrhage (n = 1).