Table 1.

List of variables in both sets

Predictor Set	Outcome Set ‡
Age	DM, first two years
Tumor location	DM, 2–4 years
Side	DM, more than 4 years
Tumor size *	LRR, first two years
LN involvement *	LRR, 2–4 years
LN involvement †	LRR, more than 4 years
Periglandular growth *
NHG
Multiple tumors *
Estrogen receptor
Progesterone receptor
S-phase fraction
DNA index
DNA ploidy

Abbreviations: LN: lymph node, NHG: Nottingham Histologic Grade, DM: Distant Metastasis, LRR: Loco-regional Recurrence

* from pathology report, ^† N0: Not palpable LN metastasis, ^‡ all periods are time after diagnosis.