Comment on

• Endovascular repair of ruptured abdominal aortic aneurysm is superior to open repair: Propensity-matched analysis in the Vascular Quality Initiative.

  Wang LJ, Locham S, Al-Nouri O, Eagleton MJ, Clouse WD, Malas MB. Wang LJ, et al. J Vasc Surg. 2020 Aug;72(2):498-507. doi: 10.1016/j.jvs.2019.11.063. Epub 2020 Apr 6. J Vasc Surg. 2020. PMID: 32273221
• Important covariates such as perioperative cardiac arrest or hemodynamic instability to reduce confounding.

  Ng JJ, Choong AMTL. Ng JJ, et al. J Vasc Surg. 2021 Mar;73(3):1115-1116. doi: 10.1016/j.jvs.2020.09.040. J Vasc Surg. 2021. PMID: 33632503 No abstract available.