Classification of expected costs by non-invasive test results
| Test result | Negative outcome | Positive outcome |
| Negative | Low cost | Cost waste |
| (true −) | (false +) | |
| Positive | Cost waste | High cost |
| (false −) | (true +) |
True −, post-test resource use is low; true +, post-test resource use is appropriately high, including catheterisation and intervention (as needed); false −, after negative test, patient presents with documented coronary artery disease (such as acute myocardial infarction); false +, after positive test, patient is found to have no coronary artery disease (for example, normal catheterisation).