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. Author manuscript; available in PMC: 2017 Oct 18.
Published in final edited form as: Breast Cancer Res Treat. 2011 Sep 4;130(3):725–734. doi: 10.1007/s10549-011-1748-z

Table 1. Patient cohorts.

Cohort 1 Cohort 2
Time period 1984–1992 2004–2006
Age at diagnosis All ages Up to age 60a
Screening routine No Yes (49–60)
Recruitment NKI and TRANSBIG Netherlands (16 hospitals)

Composition of patients diagnosed with lymph-node negative breast cancer ([7, 8, 12] vs. [9] respectively) in Cohorts 1 and 2

a

Enrollment RASTER up to age 60