Table 3.

Cohort size (number of patients), median age at exposure and attained age for the published breast cancer rates after Hodgkin's disease radiotherapy.

Published breast cancer risk after Hodgkin's disease	Cohort size	Age at exposure	Age at exposure + mean follow-up
Dores et al. [16]	32'591	37	45
Hancock and Hoppe [14]	2'162	29	40
Swerdlow et al. [15]	5'519	36	45
van Leeuwen et al. [17]	1'253	24	38