Table 2.

Multivariate linear regression for distant DFS events as a percentage of total participants randomized, weighted by sample size (n = 68).

Variable	B-coefficient	Standardised ß-coefficient	P
Start year	− 0.41	− 0.34	< 0.0001
Median FU time (months)	0.10	0.48	< 0.0001
% node positive	0.06	0.27	0.001
% ER positive	− 11.9	− 0.34	< 0.0001
% premenopausal	0.66	0.028	0.73

R² 0.68.

FU follow-up, ER estrogen receptor.