| ADAM | UKSTAT | |
|---|---|---|
| Study, year | Lederle et al., 2002 (9;36) | UKSTAT, 2002 (25) |
| Recruitment | ||
| Study design | RCT | RCT |
| Location | United States, multi-site | United Kingdom |
| Males, % | 99.2 | 82.8 |
| Age | 50–70 | 60–76 |
| Mean age, years | 69 | 68 |
| Randomized | ||
| Follow-up, years | 4.9 | 8.0 |
| Immediate repair, no. | 569 | 563 |
| Surveillance, no. | 567 | 527 |
| Interventions | ||
| Immediate Repair | 1.5 weeks | 3 months |
| Surveillance intervals | 6 months | 6 months |
| Repair criteria for surveillance | 5.5 cm | 5.5 cm |
| Outcome ascertainment | ||
| Surveillance compliance, % | 87.0 | 93.0 |
| Immediate repair, % | 85.3 | 100 |
| Surveillance, % | 100 | 100 |
| Results | ||
| AAA deaths OR (95% CI) | 1.00 (0.52–1.90) | 0.69 (0.44–1.07) |
| All deaths OR (95% CI) | 1.22 (0.93–1.61) | 0.81 (0.64–1.03) |
| Quality | Good | Good |
*
AAA indicates abdominal aortic aneurysm; CI, confidence interval; OR, odds ratio.