Medvedev et al reported the NMR-2000 model for evaluating a neonate with a low birthweight. This can help to identify a patient who may benefit from more aggressive management. The authors are from the University of California San Francisco, London School of Hygiene and Tropical Medicine, University College London, Imperial College London, Makerer University, Karolinska Institutet and facilities in The Gambia and Uganda.
Patient selection: neonate with birthweight <= 2,000 grams
Parameters:
(1) birthweight in grams
(2) highest level of respiratory support in the first 24 hours
(3) SpO2 on admission in percent
Parameter
Finding
Points
birthweight
-0.0032 * (weight)
respiratory support
none
0
nasal cannula or head box
0.3167
CPAP, BiPAP, SiPAP or invasive ventilation
1.6214
SpO2 on admission
90 to 100%
-1.3697
80 to 89%
-0.7694
< 80%
0
value of X =
= SUM(points for all of the parameters) + 2.6142
probability of mortality =
= 1 / (1 + EXP((-1) * X))
Performance:
• The area under the ROC curve is 0.89.
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