Table 1. Characteristics of the 13 twin pairs, discordant for Hodgkin lymphoma, whose fecal samples were used for the study.

Characteristic
Race
White, no. of pairs (%)	12 (92)
Non-white, no. of pairs (%)	1 (8)
Zygosity
MZ, no. of pairs (%)	5 (38)
DZ, no. of pairs (%)	8 (62)
Gender type
MM, no. of pairs (%)	3 (23)
FF, no. of pairs (%)	6 (46)
MF, no. of pairs (%)	4 (31)
Other characteristics
Mean age (range) at diagnosis	29 (18–44) years
Mean interval (range) between diagnosis and participation	22.5 (10–36) years
Mean no. (range) of bacterial V2-16S rRNA sequences (initial analysis)	9798 (5520–23 755)
Mean no. (range) of bacterial V2-16S rRNA sequences (conservative analysis)	9114 (5258–22 199)

Abbreviations: DZ=dizygotic; F=female; M=male; MZ=monozygotic.