SERPINF1 and aneurysm: Because unruptured aneurysms in the elderly were not treated and, therefore, their plasmas were not obtained, the age in the unruptured aneurysm group was significantly younger than that in the SAH group (81.8 ± 4.4 years; p < 0.001, Mann–Whitney U test), but there were no gender differences in the plasma PEDF concentrations in either the SAH group or the unruptured aneurysm group (male vs. female = 17.3 ± 4.8 vs. 14.1 ± 4.9μg/mL, p = 0.086 and 9.9 ± 2.5 vs. 7.8 ± 0.9μg/mL, p = 0.110, respectively; unpaired t-test).