Table 1.

Patient characteristics for training and testing sets.

Variables	Entire cohort	Eligible cohort	Analysis cohort
N	16,108	1888	746
Note number	659,576	55,699	999
Maternal age (yrs)	27.6 ± 6.0	27.3 ± 5.8	26.6 ± 5.9
Gestational age (wks)	38.2 ± 3.2	38.9 ± 2.0	38.9 ± 2.1
Birth weight (g)	3075.9 ± 738.4	3179.8 ± 565.9	3144.4 ± 569.0
Gender
Female	7799 (48%)	940 (50%)	369 (49%)
Male	8308 (52%)	948 (50%)	377 (51%)
Infant feeding present (%)	12.49	16.31	80.2