AVP and non-compaction cardiomyopathy: Copeptin levels had an even better predictive value (AUC 0.97 (95% CI 0.9–1.03), p-value < 0.001) in cases with either dilated and restrictive cardiomyopathy, but no predictive value in cases with either hypertrophic or LV non-compaction cardiomyopathy (AUC 0.61 (95% CI 0.05–1.17), p-value = 0.71).