Well yes, of course. I didn't say they were?
However, statistics tend to only be provided for 3 categories: sub 28 weeks, 28-32 weeks and 33-37 weeks.
28 weeks is not the same as 32 weeks, either. But that's the information that is available.
Feel free to provide more detail if you like.
PPs have argued for not treating preterm babies because some babies don't have good outcomes and they might suffer. No further suggestions have been made for how this might apply in practice.
I do not subscribe to this viewpoint and was attempting to provide a bit more detail and nuance to flesh out my argument, including the number of babies this might actually apply to. Its difficult to form reasonable arguments in the absence of information.
When treatment for prem babies is given, the best interests of the individual child is always considered, its not a blanket blunt rule of 'we do x at 25 weeks but we don't at 24'. Individual babies of the same gestation vary in weight, development and illnesses.
And as we found out during the 3 1/2 months my son spent in special care, doctors rarely agree with each other. Its never clear cut.