Table 3.

Univariate and multivariate analyses of factors that may impact local control of ALNR

		Univariate analysis			Multivariate analysis
Characteristic and strategy	N = 21	Odds ratio	95% CI	P	Odds ratio	95% CI	P
Age at ALNR treatment (years)
< 70/≥ 70	9/12	0.35	0.35–3.32	0.89	1.08	0.13–8.73	0.94
Number of lymph nodes
Single/multiple	5/16	0.48	0.15–1.53	0.21	0.50	0.098–2.63	0.42
Size of the largest lymph node
< 20/≥ 20 mm	9/12	0.67	0.23–1.95	0.47	3.13	0.43–22.8	0.26
Corresponding metastatic lesion
No/Yes	15/6	0.27	0.035–2.17	0.22	0.72	0.048–11.04	0.81
Estrogen receptor
Positive/Negative	16/5	6.01	0.77–46.9	0.087	9.52	0.56–159.81	0.11
Ki‐67 LI
< Median 70%/≥ 70%	10/11	0.71	0.24–2.08	0.53	1.36	0.28–6.48	0.69
Ki‐67 LI change between PT and ALNM
ALNM< PT/ALNM > PT	5/16	0.21	0.057–0.81	0.023	0.28	0.059–1.38	0.12
Adjuvant chemotherapy
Yes/No	15/6	0.69	0.22–2.09	0.51	0.52	0.061–4.55	0.56
Adjuvant radiation therapy
Yes/No	10/11	1.87	0.63–5.47	0.25	2.34	0.41–13.30	0.33

Bold values indicate statistical significance. ALNM, axillary lymph node metastasis; ALNR, axillary lymph node recurrence; CI, confidence interval; LI, labeling index; PT, primary tumor.