Competing Risks Model
Among the 224 patients without previously established follow-up,
follow-up with a cardiologist or cardiac surgeon occurred in 68 patients
with a median time-to-event of 0.62 (0.13, 1.94) years (Figure
2 ). The competing event of death occurred in 60 patients with a median
time-to-death of 1.76 (0.95, 3.02) years. In the least disadvantaged
quartile (Q1), 11 patients reached the competing event of death in the
study period with a median time-to-event of 1.91 (1.49, 3.08) years. In
the most disadvantaged quartile (Q4), 26 patients reached the competing
event of death with a median time-to-event of 1.5 (0.95, 2.29) years. On
competing risks regression adjusted for age, ATAA size at index scan,
active malignancy, sex, and race, only the most disadvantaged quartile
was significantly less likely to receive follow-up prior to death (HR
0.46 [0.34, 0.62], p<0.001), compared to the least
disadvantaged quartile (Table 4 ).