Here it is:
This is a study of around 50 women with slow fetal heart rates. Of the women studied, nearly all of the ones that didn't make it had fetus's that were more than 5 days different to their correct gestational size/age. As you can see here, 50% were at the correct size, and of those, 44% survived and only 6% didnt...
44 % survived at the correct size
6 % didnt survive at the correct size
11 % survived and were under sized
39 % didnt survive and were under sized