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Table 1: 
Patient characteristics for groups A and B
Group A (Stenosis)Group B (Healthy)P Value
No.7056
Age (yr)73.6 ± 11.665.6 ± 10.2<.001a
Heart rate (beats/min)69.9 ± 17.272.6 ± 12.30.312
Blood pressure (mm Hg)92.8 ± 19.997.6 ± 18.50.124
Stenotic degree (%)81.4%NANA
Prior minor stroke19 (27%)1 (1.7%)<.001a
  • Note:—NA indicates not applicable.
  • ↵a Statistically significant (t test, P < .05). There was no measurable stenosis in the healthy (control) population.