Table 1.

Characteristics of Hodgkin lymphoma survivor twins and their unaffected co-twins.

	Blood samples N=9 pairs		Saliva samples N=36 pairs
	Mean	SD	Mean	SD
Age at diagnosis, y	29.9	11.7	25.5	8.1
Age at sample collection, y	57.4	9.8	50	10.3
Male	58.6	11	50.9	9.6
Female	56	7.7	49.3	10.8
Years follow-up since diagnosis, y	27.6	12	24.5	8.8
	Median	Range	Median	Range
Age at diagnosis, y	26	17–52	23.5	14–44
Age at sample collection, y	54	46–79	47.5	31–68
Male	54	51–79	47.5	33–68
Female	56.5	46–65	47	31–67
Years follow-up since diagnosis, y	34	8–42	24.5	3–46
	N	%	N	%
Sex
Male	5	55.6	16	44.4
Female	4	44.4	20	55.6
Histology
Nodular sclerosis	6	66.7	18	50
Other	1	11.1	11	30.6
Unknown	2	22.2	7	19.4