A Unifying Theory for SIDS

Table 2

Male mortality fractions of all applicable* 9ICD Chapters in US infants (<1 year) 1979–1998 with comparison to 10ICD equivalents for 1999–2005 [6].

Disease systems and disorders	9ICD^∗∗ Chapter,1979–98	Male	Female	Male fraction	10 ICD^∗∗ Chapter, 1999–05	Male	Female	Male fraction
Infectious and parasitic disease	001–139	8,518	6,705	0.560	A00-B99	2,069	1,652	0.556
Neoplasms	140–239	1,633	1,563	0.511^∗∗∗	C00-D48	482	472	0.505^***
Endocrine, nutritional, metabolic diseases and immunity disorders	240–279	4,080	3,196	0.546	E00-E85	1,017	769	0.569
Blood and blood forming organs	280–289	959	773	0.554	D50-D89	385	260	0.597
Mental and behavioral disorders	290–319	115	112	0.507^∗∗∗	F01-F99	27	18	0.600
Nervous system and sense organs	320–389	7,542	5,792	0.566	G00-G98	1,556	1,147	0.576
Circulatory system	390–459	11,405	8,913	0.561	I00-I99	2,352	1,980	0.542
Respiratory system	460–519	14,313	10,055	0.587	J00-J98	2,725	1,959	0.581
Digestive system	520–579	4,843	3,385	0.588	K00-K92	2,249	1,494	0.601
Genitourinary system	580–629	2,629	1,966	0.572	N00-N98	762	551	0.580
Skin and subcutaneous tissue	680–709	81	71	0.533	L00-L98	14	1	0.933
Musculoskeletal system and connective tissue	710–739	121	94	0.563	M00-M99	60	24	0.714
Congenital anomalies—not respiratory system	740–747	73,154	64,609	0.540	Q00-Q29	18,173	16,643	0.522
	749–759				Q35-Q99
Congenital anomalies—respiratory system	748	11,567	7,662	0.602	Q30-Q34	2,509	1,822	0.579
Certain conditions originating in perinatal period	760–779	198,282	151,191	0.567	P00-P96	55,803	42,795	0.566
Symptoms, signs, other unspecified conditions (includes SIDS 798.0 and R95)	780–799	67,116	44,603	0.601	R00-R99	14,435	9,557	0.592
External causes of injury and poisoning	800–999	13,970	11,187	0.555	V01-Y89	5,545	4,221	0.568

^∗9ICD codes 630–679 and 10ICD codes O00-O99 for pregnancy, childbirth, and puerperium complications are invalid for infants.
^∗∗The 9ICD codes provided for these general conditions may not match exactly to the 10ICD codes listed for the same general conditions.
^∗∗∗Male fraction is lower than the 0.512 male fraction of US live births expected if there is no male disadvantage.