I really don't intend to prolong this discussion or further my reputation as a curmudgeon. I can accept the conclusion that current evidence suggests TWA testing has "implications for risk stratification and health policy".
Where I think we can agree to disagree is that I don't see how the results published so far can be applied by an INDIVIDUAL patient and an INDIVIDUAL doctor. With non-ischemic cardiomyopathy and a negative test, I think we can say the results could be used to avoid unnecessary AICD insertion. Other than that, I don't think we can say the test has the specificity or sensitivity to answer the critical questions it is supposed to address.