Table 1 Demographic characteristics of... | American Society of Hematology

Table 1

Demographic characteristics of the young adult Hodgkin lymphoma (YAHL)–affected case-twins, affected and unaffected cotwins, and matched controls

	Controls		Case-twins*		Unaffected cotwins		Affected cotwins†
	No.	%	No.	%	No.	%	No.	%
Sex
Male	49	54	34	38	34	40	2	40
Female	41	46	56	62	50	59	3	60
Total	90		90		84		5
Age at diagnosis, y
20 or younger	—	—	32	35	—	—	—	—
21 to 30	—	—	42	47	—	—	—	—
31 to 45	—	—	16	18	—	—	—	—
Total			90
Age at participation
30 or younger	11	12	12	13	12	14	0	0
31 to 40	32	36	32	36	28	33	4	80
41 to 50	36	40	37	41	35	41	1	20
51 to 60	11	12	9	10	9	11	0	0
Total	90		90		84		5
Race
White	89	99	88	98	82	98	5	100
African-American	1	1	1	1	1	1	0	0
Asian	0	0	1	1	1	1	0	0
Total	90		90		84		5
Zygosity
MZ	—	—	58	64	53	62	5	100
DZ	—	—	32	36	31	38	0	0
Total	90		90		84		5

	Controls		Case-twins*		Unaffected cotwins		Affected cotwins†
	No.	%	No.	%	No.	%	No.	%
Sex
Male	49	54	34	38	34	40	2	40
Female	41	46	56	62	50	59	3	60
Total	90		90		84		5
Age at diagnosis, y
20 or younger	—	—	32	35	—	—	—	—
21 to 30	—	—	42	47	—	—	—	—
31 to 45	—	—	16	18	—	—	—	—
Total			90
Age at participation
30 or younger	11	12	12	13	12	14	0	0
31 to 40	32	36	32	36	28	33	4	80
41 to 50	36	40	37	41	35	41	1	20
51 to 60	11	12	9	10	9	11	0	0
Total	90		90		84		5
Race
White	89	99	88	98	82	98	5	100
African-American	1	1	1	1	1	1	0	0
Asian	0	0	1	1	1	1	0	0
Total	90		90		84		5
Zygosity
MZ	—	—	58	64	53	62	5	100
DZ	—	—	32	36	31	38	0	0
Total	90		90		84		5

— indicates not applicable.

Case-twins diagnosed with young adult Hodgkin lymphoma (YAHL) between 13 to 49 years of age.

Affected cotwins were not included in subsequent analyses.