Sorry, I dont have access to a scanner just at the moment to put an example on here, but I may be able to do so next week. If you have access to Jeppesen charts, look at Rome Fiumicino LIRF for example. All the NDB, VOR and RNAV approaches have a DA, not an MDA. I say again, this is a European thing, and you dont see it in the States.
If JimL has an expert answer, it would be much appreciated!