Early delivery

Elizabeth
I'm sure it's based on the individual and their pregnancy but has anyone heard if high risk pregnancies generally are delivered early? 
I'm quite liking the idea of my April baby and I'm hoping I go all the way to term . I understand the doctors will have final say so both me and baby are safe and healthy but as this is my first pregnancy I was curious what others have heard.  
Mind you this was heard from a non medical person so I'll wait until the doc verifies just curious.