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Table 1: Comparison of clinical and imaging characteristics between recurrent and matched primary plaques^{^a}
  Recurrent Plaques Primary Plaques P Value
Patient characteristics^{^b} 
 Age 75.8 (SD, 9.5) 74.3 (SD, 11.4) .736
 Male 6 (60.0%) 25 (68.8%) .727
 Hypertension 9 (90.0%) 29 (76.3%) .664
 Hyperlipidemia 8 (80.0%) 23 (60.5%) .459
 Diabetes 0 (0.0%) 7 (18.4%) .318
Plaque characteristics^{^c} 
 Plaque components 
  Lipid core 12 (92.3%) 32 (82.1%) .662
  Fibrous cap 12 (92.3%) 32 (82.1%) .662
  Calcification 9 (69.2%) 31 (79.5%) .466
  IPH 8 (61.5%) 12 (30.8%) .048^{^d}
  Ulceration 8 (61.5%) 20 (51.3%) .521
 Maximum wall thickness (mm) 4.12 (SD, 1.74) 4.41 (SD, 1.50) .562
 Remodeling ratio 1.57 (SD, 0.57) 1.49 (SD, 0.50) .662
 Lesion length (cm) 2.26 (SD, 1.12) 1.47 (SD, 0.54) .001^{^d}
 Adventitial enhancement .358
  Category 0 5 (38.5%) 7 (17.9%) 
  Category 1 3 (23.1%) 14 (35.9%) 
  Category 2 5 (38.5%) 18 (46.2%) 
 Plaque position .002^{^d}
  Opposite flow divider 4 (30.8%) 31 (79.5%) 
  Along flow divider/sidewalls 9 (69.2%) 8 (20.5%) 
↵a Data are presented as mean (SD) or number (percentage).
↵b Number of patients in the recurrent plaque group and primary plaque group are 10 and 38, respectively.
↵c Number of plaques in the recurrent plaque group and primary plaque group are 13 and 39, respectively.
↵d P < .05