Table 2.
Acute and delayed surgical management, in total and in three different 5-year time periods
| Surgical management | Total (n = 5757) | 2002–2006 (n = 1767) | 2007–2011 (n = 1917) | 2012–2016 (n = 2073) | P-value |
|---|---|---|---|---|---|
| Acute aortic surgery | 1807 (31%) | 478 (27%) | 603 (31%) | 726 (35%) | <0.001 |
| Type A—acute surgery | 1609 (28%) | 438 (25%) | 544 (28%) | 627 (30%) | 0.001 |
| Type B—acute surgery | 198 (3%) | 40 (2%) | 59 (3%) | 99 (5%) | <0.001 |
| Delayed aortic surgery | 260 (5%) | 93 (5%) | 83 (4%) | 84 (4%) | 0.176 |
| Type A—delayed surgery | 100 (2%) | 27 (2%) | 28 (2%) | 45 (2%) | 0.116 |
| Type B—delayed surgery | 160 (3%) | 66 (4%) | 55 (3%) | 39 (2%) | 0.002 |
Proportions of hospitalized patients that were treated with surgery during the three 5-year time periods. Acute is defined as surgery within 14 days from admission and any later surgery is defined as delayed. The proportion of patients with type B dissection treated with endovascular repair was 82% for acute surgery and 76% for delayed surgery. P-values refer to differences between the time groups, trends, analysed with the χ2 test.