You are confusing me somewhat, maybe you can clarify, but my understanding (and I've been under this apprehension for many years now) is that there are 3 levels of Neonatal care, but only level 3 is an NICU..
Level 1 is SCBU - Warm, feed, open cot short term care (24 hours)
Level 2 is LNU - Drip feeding, Respiratory assistance etc, around 48 hours of care.
Level 3 is NICU - The only actual 'Intensive Care Unit'
I presume that there is some overlap, i.e. a Level 3 NICU could have course provide L1/L2 care.
Not true, as above, the confusion seems to be lumping Level 1 and 2 "units" with the actual intensive care units (Level 3).. My stats for NICU (1.2% to as high as 8%) mortality rates are not indicative of thinking every baby in an NICU is on deaths door, but more as by my point that the admittance to an actual 'ICU' just means the risk has increased to a point that calling them 'healthy' is a bit of a stretch.
Anyway, I can see some of my ignorance in I haven't followed the case that closely to realise Letsby was not working in an actual level 3 NICU so my point was rather moot anyway..