Table 1. Case Flow Information.

Step	Cases, No.						SUID rate, No./1000 births
	Control	Infant death	ICD-10 code			Total SUID
			R95	R99	W75
Start	19 258 173	110 542	6884	6093	4490	17 467	0.91
Remove infants born at GA <28 wk	93 369	50 477	87	239	49	375	NA
Remaining	19 164 804	60 065	6797	5854	4441	17 092	0.89
Remove CDC flags for incomplete reporting areas	323 655	625	91	52	26	169	NA
Remaining	18 841 149	59 440	6706	5802	4415	16 923	0.90
Remove all ICD-10 infant death codes except R95, R99, and W75	NA	42 517	NA	NA	NA	NA	NA
Remaining	18 841 149	16 923	6706	5802	4415	16 923	0.90
Remove all deaths <7 d	NA	378	118	196	64	378	NA
Retained for analysis	18 841 149	16 545	6588	5606	4351	16 545	0.88

Abbreviations: CDC, Centers for Disease Control and Prevention; GA, gestational age; ICD-10, International Statistical Classification of Diseases, Tenth Revision; NA, not applicable; SUID, sudden unexpected infant death.