Why does the “nomenclature” tangle the diagnoses? Why add a new diagnosis “TGA+VSD” while there are “TGA” and “VSD” already?
The new nomencalture introduces even more tangled entries. Where is it going?
I think it’s because they can’t think of a way to analyze the data with overlapping sets. It’s a run-away strategy. Unfortunately they won’t run away. The overlapping still occurs, because it’s impossible to create a list with al the possible combinations of diseases.