Table 1 Description of the main characteristics in the prospective and ambispective MARTHA samples
Variables | MARTHA Prospective sample | MARTHA Ambispective sample | ||||
|---|---|---|---|---|---|---|
Total N = 839 | Recurrences N = 159 | Non-recurrences N = 680 | Total N = 1,504 | Recurrences N = 565 | Non-recurrences N = 939 | |
N (%) | N (%) | N (%) | N (%) | N (%) | N (%) | |
Gender | ||||||
Men | 275 (32.8%) | 63 (39.6%) | 212 (31.2%) | 509 (33.8%) | 232 (41.1%) | 277 (29.5%) |
Age at inclusion (mean ± SD) | 45.2 ± 14.9 | 44.0 ± 13.9 | 45.5 ± 15.4 | 47.1 ± 15.4 | 50.0 ± 14.7 | 45.3 ± 15.5 |
Age at the first VT (mean ± SD) | 42.3 ± 15.5 | 41.5 ± 14.4 | 42.5 ± 15.8 | 41.0 ± 15.7 | 40.5 ± 15.1 | 41.3 ± 16.0 |
Delay between inclusion and first VT (In years, mean ± SD) | 2.9 ± 6.2 | 2.5 ± 5.3 | 3.0 ± 6.4 | 6.1 ± 9.85 | 9.5 ± 11.3 | 4.0 ± 8.2 |
Type of the first VT | ||||||
DVT | 653 (77.8%) | 122 (76.7%) | 531 (78.1%) | 1,189 (79.1%) | 454 (80.4%) | 735 (78.3%) |
Characteristic of the first VT | ||||||
Provoked | 544 (64.8%) | 93 (58.5%) | 451 (66.3%) | 993 (66.0%) | 368 (65.1%) | 625 (66.6%) |
Age at the collection of information on recurrence (mean ± SD)a | 54.9 ± 15.2 | 54.9 ± 13.9 | 54.9 ± 15.5 | 52.5 ± 15.6 | 43.0 ± 14.2 | 52.1 ± 16.4 |
Delay of follow-up in yearsb (In years, mean ± SD) | 8.8 ± 5.5 | 6.4 ± 5.3 | 9.4 ± 5.4 | 9.7 ± 9.6 | 7.9 ± 8.9 | 10.8 ± 9.8 |
ABO haplotypes | ||||||
A1 | 32.8% | 37.4% | 31.7% | 33.5% | 35.8% | 32.2% |
A2 | 5.5% | 5.3% | 5.5% | 5.9% | 6.9% | 5.3% |
O1 | 51.0% | 47.5% | 51.8% | 49.8% | 46.9% | 51.5% |
O2 | 1.7% | 1.6% | 1.7% | 1.5% | 1.5% | 1.5% |
B | 9.1% | 8.2% | 9.3% | 9.3% | 8.9% | 9.5% |