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Table 1: Patient characteristics (n = 45)
Patient Demographics Symptomatic Patients (n = 31) Asymptomatic Patients (n= 14) P Value^a
Age (yr) (mean) (range) 67.0 ± 10.4 (43–82) 69.6 ± 9.0 (56–82) .43^b
Male (No.) (%) 21 (67.7) 13 (92.9) .13^c
Carotid arteries 
Left side treated (No.) (%) 15 (48.4) 9 (64.3) .32
Stenosis grade (%), mean ± SD (range) 89.5 ± 9.4 (65–99) 88.9 ± 5.8 (75–99) .32^b
Symptoms 
Stroke (No.) (%) 11 (35.5) None N.A.
TIA (No.) (%) 13 (41.9) None N.A.
AF (No.) (%) 7 (22.6) None N.A.
Interval in days 
Pretreatment CTP to treatment (mean) (range) 3.2 ± 6.4 (0–35) 3.5 ± 1.9 (3–10) .03^b
Treatment to posttreatment CTP (mean) (range) 33.9 ± 4.8 (22–44) 71.9 ± 82.6 (8–263) .84^b
Medical history 
Hypertension (No.) (%) 25 (80.6) 13 (92.9) .41^c
Diabetes mellitus (No.) (%) 3 (9.7) 3 (21.4) .36^c
Hypercholesterolemia (No.) (%) 12 (38.7) 12 (85.7) .008
Smoking (No.) (%) 10 (32.3) 6 (42.9) .52^c
Previous myocardial infarction (No.) (%) 4 (12.9) 3 (21.4) .66^c
Previous CABG (No.) (%) 2 (6.5) 1 (7.1) 1.00^c

Note:—N.A. indicates not applicable; AE, atrial fibrillation.


↵a P values analyzed with the Pearson χ² test.


↵b P values analyzed with Mann-Whitney U test.


↵c P values analyzed with Fisher exact test.