Table 4.

Subgroup analysis for associated factors with local or distant metastasis respectively

Variables	Local + contralateral breast recurrence		Distant metastasis
	N = 61		N = 78
	Odds Ratio (95 % CI)	P value	Odds Ratio (95 % CI)	P value
Age(<50 vs ≥50)	0.970 (0.938 ~ 1.004)	0.084	0.984 (0.955 ~ 1.013)	0.282
Tumor size (>2 cm vs ≤ 2 cm)	0.834 (0.467 ~ 1.489)	0.539	1.767 (1.033 ~ 3.023)	0.038
ALNa metastasis (Yes vs No)	1.817 (1.022 ~ 3.229)	0.042	4.274 (2.470-7.395)	<0.001

^a ALN axillary lymph node