TABLE 3

Area Under the ROC Curve (95% CI) for Raw WBC Count and Residual Variables, Defined as the Difference Between Values Observed and Those Predicted From Age, Gender, Delivery Method, and Other Predictors

TotalAge, h
<11–3.99≥4
WBC count0.710.520.640.87
WBC count-residual0.700.550.660.87
P for difference.84.003.15.88
ANC0.730.550.680.85
ANC-residual0.710.570.680.84
P for difference.01.14.86.51
I/T0.760.730.730.82
I/T-residual0.760.700.720.85
P for difference.79.10.81.01
  • Values were estimated by using all of the newborns with confirmed infections and a 30% random sample of those with no confirmed infection (total sample size: 20 152); larger samples of the noninfected newborns could not be accommodated computationally.