I was going to say something similar to Beema and Divvy.

It all depends on how the baby/child is and if their "problem" is impacted by prematurity.

Brendan is 3 (born 30+1) and is still being referred to as a prem, he is also still being corrected. He is average height but everything else is well below average for his age. Brendan is still on a Follow-Up Programme which starts off through the hospital of birth, he is now through the State Child Development Centre, but the same team.

Tristan is 9 months (born 34+3) and is referred to as prem. He was 3.09kg born but at 9 months is only 7.04kg. He has a small problem with his leg which gets him some physio appointments every assessment she's done he's been corrected for, even though he is well above the average (50th %ile) for his actual age (for gross motor skills).

They will always be prem, nothing will change that and should a problem arise later on they will most likely still be noted as being born prem.