If you have a successful test (no abnormal ECG or unusual blood pressure or heart rate variations) it is likely that your risk of significant coronary artery disease is low. Stress tests are able to detect individuals with heart disease nearly 90 percent of the time. This means that, if you actually DO have heart disease, the test will accurately detect it nine out of 10 times. Stress tests may not however be specific or accurate. This is true especially for women between the ages of 45 and 70. Women seem to have a higher incidence of “false positive” results. If you do have a “positive” result it may require further testing to clarify the situation. People who have a “positive” test with a very high level of activity tend to have a good prognosis. If you are concerned about the findings of the ECG test, you may wish to discuss them with your doctor at greater length.