highly significantP < 0.00001
All eligible cases (1,300 cases) Univariate analysis of all cases with complete Mammostrat ® data irrespective of ER status, nodal status or treatment showed a highly significant association between Mammostrat ® score and DRFS (Figure 2b ), between score and RFS (Figure S1D in Additional file 1 ), and between score and OS (all P < 0.00001; Figure S2D in Additional file 1 ).