Table 2:

Plaque enhancement index change of culprit and nonculprit plaques over time

PhasePEI
All Plaques (n = 113)aNonculprit Plaque (n = 83)aCulprit Plaque (n = 30)b
1st0.66 ± 0.510.54 ± 0.441.02 ± 0.53
2nd0.72 ± 0.520.55 ± 0.421.17 ± 0.50
3rd0.73 ± 0.470.58 ± 0.391.16 ± 0.41
4th0.76 ± 0.530.60 ± 0.441.20 ± 0.49
Pc.033.450.034
P 1st versus 2nd.014.578.007
P 1st versus 3rd.049.446.057
P 1st versus 4th.029.401.035
P 2nd versus 3rd.879.640.869
P 2nd versus 4th.502.572.680
P 3rd versus 4th.458.771.477

  • ↵a A mixed-effects model repeated measures ANOVA for continuous variables was used to analyze the differences between all 4 postcontrast phases in all plaque groups and the nonculprit plaque group.

  • ↵b A 1-way repeated-measures ANOVA for continuous variables was used to analyze the differences between the 4 postcontrast phases in the culprit plaque group. This was followed by a pair-wise comparison post hoc analysis using Bonferroni correction to compare the differences between the PEI values of each 2 contrast phases.

  • ↵c P values of the comparisons of the 4 postcontrast phases.