Table 3.
Cox regression analysis of risk factors for TLR and TVR
| Variables | TLR | TVR | ||||||||||
| Univariate analysis | Multivariate analysis | Univariate analysis | Multivariate analysis | |||||||||
| HR | 95% CI | P value | HR | 95% CI | P value | HR | 95% CI | P value | HR | 95% CI | P value | |
| Age | 1.001 | 0.985to 1.017 | 0.906 | – | – | – | 1.001 | 0.986 to 1.016 | 0.908 | – | – | – |
| Male | 1.094 | 0.686 to 1.742 | 0.707 | – | – | – | 1.178 | 0.749 to 1.852 | 0.479 | – | – | – |
| Prior MI | 0.973 | 0.695 to 1.363 | 0.875 | – | – | – | 0.997 | 0.725 to 1.372 | 0.987 | – | – | – |
| Prior PCI | 1.108 | 0.637to 1.927 | 0.718 | – | – | – | 1.155 | 0.687 to 1.940 | 0.587 | – | – | – |
| Current smoking | 0.981 | 0.096 to 1.383 | 0.913 | – | – | – | 1.009 | 0.729 to 1.397 | 0.958 | – | – | – |
| Hypertension | 1.082 | 0.761 to 1.539 | 0.66 | – | – | – | 1.025 | 0.736 to 1.429 | 0.883 | – | – | – |
| Hyperlipidemia | 0.901 | 0.571 to 1.423 | 0.655 | – | – | – | 0.972 | 0.623 to 1.515 | 0.899 | – | – | – |
| Diabetes mellitus | 0.973 | 0.675 to 1.404 | 0.885 | – | – | – | 1.026 | 0.727 to 1.448 | 0.885 | – | – | – |
| BMI | 0.968 | 0.918 to 1.019 | 0.216 | – | – | – | 0.966 | 0.919 to 1.015 | 0.169 | – | – | – |
| LVEF | 1.025 | 1.002 to 1.049 | 0.035 | 1.025 | 1.001 to 1.050 | 0.04 | 1.024 | 1.002 to 1.046 | 0.036 | 1.023 | 1.001 to 1.047 | 0.044 |
| eGFR | 0.995 | 0.998 to 1.002 | 0.141 | – | – | – | 0.997 | 0.991 to 1.003 | 0.333 | – | – | – |
| Non-LAD CTO | 1.733 | 1.188 to 2.529 | 0.004 | 1.441 | 0.977 to 2.124 | 0.065 | 1.873 | 1.301 to 2.697 | <0.001 | 1.601 | 1.101 to 2.328 | 0.014 |
| Reference vessel diameter | 0.662 | 0.439 to 0.997 | 0.049 | 0.744 | 0.494 to 1.122 | 0.158 | 0.672 | 0.456 to 0.991 | 0.045 | 0.759 | 0.516 to 1.118 | 0.163 |
| J-CTO score | 1.271 | 1.009 to 1.601 | 0.042 | 1.279 | 1.018 to 1.607 | 0.035 | 1.247 | 1.000 to 1.556 | 0.05 | 1.254 | 1.007 to 1.561 | 0.043 |
| SYNTAX score | 1.039 | 1.020 to 1.059 | <0.001 | 1.033 | 1.012 to 1.053 | 0.002 | 1.034 | 1.015 to 1.053 | <0.001 | 1.026 | 1.006 to 1.046 | 0.01 |
| Retrograde approach | 1.888 | 0.769 to 4.637 | 0.166 | – | – | – | 1.713 | 0.699 to 4.199 | 0.239 | – | – | – |
| Occlusion length ≥15 mm | 1.753 | 1.233 to 2.492 | 0.002 | 1.539 | 1.033 to 2.293 | 0.034 | 1.671 | 1.200 to 2.328 | 0.002 | 1.476 | 1.012 to 2.151 | 0.043 |
Bold values are statistically significant (p<0.05).
BMI, body mass index; CTO, chronic total occlusion; eGFR, estimated glomerular filtration rate; J-CTO, multicenter CTO registry of Japan; LAD, left anterior descending; LVEF, left ventricular ejection fraction; MI, myocardial infarction; PCI, percutaneous coronary intervention; SYNTAX, synergy between percutaneous coronary intervention with taxus and cardiac surgery; TLR, target lesion revascularisation; TVR, target vessel revascularisation.