<p>*P value for Dissection cases vs. controls;</p>†<p>P value for Non-dissecting aneurysm cases vs. controls.</p><p>Data presented as mean ± standard deviation for age and as a number (%) of subjects for other variables.</p><p><i>P</i> values are from Fisher exact test, except those for age, which are from the Wilcoxon rank sum test.</p