Table 3.

Performance of the full model stratified by gestational age categories for individual outcomes within the validation population.

	All Gestational Ages (n=34,969)		Gestational ages <32 (n=1,924)		Gestational ages 32–36 (n=33,045)
Model	n (%)	AUC (95% CI)	n = (%)	AUC (95% CI)	n = (%)	AUC (95% CI)
Morbidity or Mortality	3,235 (9.25)	0.923 (0.917–0.929)	1,485 (77.18)	0.841 (0.819–0.862)	1,769 (5.35)	0.881 (0.871–0.891)
Neonatal Mortality	157 (0.45)*	0.948 (0.928–0.967)	104 (5.56)*	0.843 (0.803–0.883)	67 (0.20)*	0.872 (0.819–0.924)
1-Year Mortality	266 (0.76)	0.913 (0.893–0.934)	159 (8.26)	0.830 (0.797–0.864)	120 (0.36)	0.815 (0.767–0.863)
RDS	2,367 (6.77)	0.954 (0.950–0.958)	1,243 (64.60)	0.787 (0.766–0.809)	1,165 (3.53)	0.928 (0.919–0.936)
PDA	1,367 (3.91)	0.893 (0.882–0.904)	767 (39.86)	0.783 (0.762–0.803)	578 (1.75)	0.814 (0.794–0.835)
ROP	616 (1.76)	0.977 (0.971–0.984)	592 (30.77)	0.756 (0.734–0.779)	69 (0.21)	0.929 (0.894–0.964)
IVH	554 (1.58)	0.953 (0.944–0.963)	431 (22.40)	0.741 (0.715–0.767)	131 (0.40)	0.878 (0.841–0.916)
BPD	423 (1.21)	0.953 (0.941–0.966)	366 (19.02)	0.806 (0.784–0.828)	66 (0.20)	0.815 (0.756–0.874)
NEC	182 (0.52)	0.952 (0.939–0.964)	150 (7.80)	0.694 (0.655–0.734)	62 (0.19	0.908 (0.863–0.954)
PVL	36 (0.10)	0.938 (0.887–0.989)	32 (1.66)	0.682 (0.602–0.762)	9 (0.03)	0.844 (0.691–0.997)

^*Full sample n=34,860, n=32,992, & n=1,869 for gestational age categories respectivelyAUC: area under the curve; RDS: respiratory distress syndrome; PDA: patent ductus arteriosus; ROP: retinopathy of prematurity; IVH: intraventricular hemorrhage; BPD: bronchopulmonary dysplasia; NEC: necrotizing enterocolitis; PVL periventricular leukomalacia