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Table 2: 
Demographic information (n = 334)
Training Set (n= 196) Testing Set (n = 138) P Value
Age (yr) 69.0 ± 10.1 69.5 ± 9.5 .61
Male sex (%) 74.0 76.1 .70
History of 
    Hypertension (%) 79.1 75.2 .43
    Diabetes mellitus (%) 20.4 27.5 .15
    Coronary artery disease (%) 34.3 39.3 .41
Smoking status 
    Never (%) 28.2 31.9 .59
    Quit (%) 49.7 44.2 
    Current (%) 22.1 23.9 
Imaging center 
    AH (%) 19.9 21.7 .27
    MSU (%) 21.4 13.0 
    PLA (%) 13.8 15.9 
    UW (%) 44.9 49.3 
Intraplaque hemorrhage (%) 24.0 19.6 .35
Fibrous cap rupture (%) 7.1 10.9 .24
Min lumen area (mm²) 17.2 ± 10.4 17.9 ± 9.1 .51
Max wall area (mm²) 61.1 ± 21.6 63.8 ± 24.5 .29
Max total vessel area (mm²) 113.0 ± 35.7 117.4 ± 38.3 .29
Max wall thickness (mm²) 3.93 ± 1.79 4.00 ± 1.70 .72
Max normalized wall index 0.696 ± 0.139 0.674 ± 0.142 .16
Presence of calcification (%) 72.4 73.9 .80
Max percentage calcification (%)^a 14.7 ± 10.4 16.1 ± 10.7 .31
Presence of LRNC (%) 59.7 63.7 .49
Max percentage LRNC^a (%) 35.8 ± 18.3 31.3 ± 17.9 .09
MRA stenosis (%) 47.6 ± 29.3 48.8 ± 32.4 .83

a Only for arteries with calcification (n= 244) or LRNC (n = 206) present.