Table 2 Comparison between FFR-positive and FFR-negative groups.
Total | FFR-negative | FFR-positive | p-value | |
|---|---|---|---|---|
Number of patients | 32 | 15 | 17 | |
FFR | 0.830 ± 0.090 | 0.901 ± 0.044 | 0.749 ± 0.048 | < 0.001 |
Percentage cross-area stenosis (%) | 44 ± 19 | 30 ± 13 | 60 ± 11 | < 0.001 |
Stenosis lesion length (mm) | 17.1 ± 11.1 | 14.0 ± 89 | 20.7 ± 12.4 | 0.088 |
Irregularity of stenotic lesion; grades 0 : 1 : 2 | 7 : 19 : 6 | 1 : 10 : 4 | 6 : 9 : 2 | 0.142 |
Irregularity of pre-stenotic lesion; grades 0 : 1 : 2 | 16 : 15 : 1 | 7 : 7 : 1 | 9 : 8 : 0 | 0.854 |
Calcification of stenotic lesion; grades 0 : 1 : 2 : 3 : 4 | 11 : 10 : 6 : 4 : 1 | 7 : 3 : 3 : 2 :0 | 4 : 7 : 3 : 2 : 1 | 0.502 |
Correlation analysis | Correlation coefficient | p-value | ||
|---|---|---|---|---|
FFR vs. percentage cross-sectional area stenosis | −0.811 | < 0.001 | ||
FFR vs. stenosis lesion length | −0.340 | 0.057 | ||
FFR vs. irregularity of stenotic lesion | −0.385 | 0.029 | ||
FFR vs. irregularity of pre-stenotic lesion | −0.244 | 0.178 | ||
FFR vs. calcification of the lesion | −0.085 | 0.643 | ||
