Well, it’s hard to really say the frequency and prevalence of cardiomyopathy because oftentimes they are not accounted. The CDC reports that 1 in 500 adults will have cardiomyopathy, with equal prevalence among men and women. Dilated cardiomyopathy tend to be more common amongst men than women and more common amongst children. It tends to affect more blacks than Caucasians. Hypertrophic cardiomyopathy is genetically transmitted. It is more common in the younger years, childhood and young adulthood.