Table 1.

Characteristics of Primary Patients With AML or MDS and Matched Controls With Available Relatives

Variable	AML (n = 6,962)		Controls (n = 27,827)		MDS (n = 1,388)		Controls (n = 5,312)
	No.	%	No.	%	No.	%	No.	%
Median age at diagnosis, years	64				76
Males		53.6		54.0		56.0		55.2
Age group, years
< 21	534	7.7			14	1.0
21-39	722	10.4			19	1.4
40-49	674	9.7			30	2.2
50-59	950	13.6			100	7.2
60-69	1,555	22.3			233	16.8
70-79	1,672	24.0			532	38.3
≥ 80	855	12.3			460	33.1
Year of diagnosis
< 1976	949	13.6			0
1976-1985	1,638	23.5			0
1986-1995	2,388	34.3			300	21.6
1995-2004	1,987	28.6			1,088	78.4

Abbreviations: AML, acute myeloid leukemia; MDS, myelodysplastic syndrome.