Single Cox Proportional Hazards Model | Multiple Cox Proportional Hazards Model^{a} | |||||
---|---|---|---|---|---|---|

Hazard Ratio | 95% CI | P Value | Hazard Ratio | 95% CI | P Value | |

Age (yr) | 0.93 | 0.89–0.98 | .003 | 0.99 | 0.93–1.05 | .63 |

Male sex | 0.68 | 0.25–1.86 | .46 | |||

Clinical presentation at diagnosis | ||||||

Asymptomatic | Reference | – | – | Reference | – | – |

Pain | 14.7 | 1.94–111 | .009 | 3.63 | 0.38–34.8 | .26 |

Mass effect | 7.94 | 0.50–127 | .14 | 13.3 | 0.59–299 | .10 |

Size | ||||||

Maximum diameter (mm) | 0.61 | 0.46–0.82 | .001 | 0.58 | 0.41–0.84 | .004 |

≥10 mm | 0.29 | 0.04–2.26 | .24 | |||

Hypertension | 0.08 | 0.02–0.35 | .001 | 0.12 | 0.02–0.70 | .018 |

Diabetes^{b} | ||||||

Hyperlipidemia | 0.47 | 0.11–2.08 | .32 | |||

Smoking | 0.78 | 0.29–2.13 | .63 | |||

Location | ||||||

Left | 1.39 | 0.16–12.5 | .77 | |||

Right | 2.87 | 0.37–22.1 | .31 | |||

Bilateral | Reference |

**Note:**—CI indicates confidence interval.↵a Variables that were statistically significant in single Cox proportional hazards models were used in the multiple Cox proportional hazards models. The cutoff point of the

*P*value was set at <.05.↵b All 6 patients with diabetes were excluded from this analysis because their aneurysms were unchanged.