Table 3.
Posttest probability of AAA given the finding of a widened aorta on physical examination in various asymptomatic clinical subgroups*
| Posttest probability (%) | ||||
| Race | Sex | Smoking status | >3 cm | >4 cm |
| Smoker | 43 | 23 | ||
| White | Male | |||
| Nonsmoker | 19 | 6 | ||
| Smoker | 19 | 4 | ||
| White | Female | |||
| Nonsmoker | 7 | <1 | ||
| Smoker | 28 | 11 | ||
| Black | Male | |||
| Nonsmoker | 15 | 2 |
*Based on prevalence estimates from Table 2 and the pooled likelihood ratios of 12.0 and 15.6 for size thresholds of 3 and 4 cm, respectively (33, 44).
AAA indicates abdominal aortic aneurysm.