We could randomly divide them into two groups, and then we could have one group that is a non-intervention control group to compare to, which we can’t do with, say, breast cancer, because everyone gets treated.
Astfel i-am putut imparti aleatoriu in doua grupuri, si am putut folosi unul din ele ca si grup de control, lucru pe care nu l-am fi putut face in cazul cancerului de san de exemplu, in care toata lumea se trateaza.