Table 2.
Significant Independent Predictors for Aortic Aneurysm Sac Enlargement Identified on Multivariable Cox Proportional-Hazards Analysis
| Covariates | Hazard Ratio (95% Confidence Interval) | P |
|---|---|---|
| Age, y | ||
| <60 | REFERENCE | |
| 60–69 | 0.80 (0.60–1.05) | 0.11 |
| 70–79 | 0.87 (0.67–1.14) | 0.31 |
| ≥80 | 1.32 (1.03–1.75) | 0.05 |
| Female | 0.96 (0.82–1.13) | 0.64 |
| AAA diameter | ||
| Maximum AAA diameter ≥55 mm | 0.97 (0.86–1.10) | 0.62 |
| Aortic neck length, mm | ||
| >15 | REFERENCE | |
| 10–15 | 0.87 (0.71–1.07) | 0.19 |
| <10 | 0.94 (0.77–1.15) | 0.53 |
| Aortic neck diameter at lowest renal artery, mm | ||
| <28 | REFERENCE | |
| 28–32 | 1.80 (1.44–2.23) | <0.0001 |
| >32 | 2.07 (1.46–2.92) | <0.0001 |
| Conical neck | 1.17 (0.97–1.42) | 0.10 |
| Aortic neck Angle | ||
| <45° | REFERENCE | |
| 45–60° | 1.04 (0.90–1.21) | 0.58 |
| >60° | 1.96 (1.63–2.37) | <0.0001 |
| Iliac diameter | ||
| Both common iliac arteries ≤20 mm | REFERENCE | |
| Only 1 common iliac artery >20 mm | 1.46 (1.21–1.76) | <0.0001 |
| Both common iliac arteries >20 mm | 1.31 (0.99–1.74) | 0.06 |
| Endoleak during follow-up | 2.70 (2.40–3.04) | <0.0001 |