Table 5.

Multivariate survival analyses for pT1a-b pN0 or pN0(i+) and pN1mi breast cancers.

pT1a-b pN0 or pN0(i+) & pN1mi			Cox OS			Cox DFS			Cox RFS
		HR	CI 95%	p	HR	CI 95%	p	HR	CI 95%	p
Age groups	≤40	1			1			1
	40.1–50		0.00–1306	0.969	0.387	0.15–1.03	0.057	0.418	0.15–1.15	0.090
	50.1–74.9	4.134	0.42–40.7	0.224	0.445	0.20–0.98	0.043	0.336	0.14–0.80	0.014
	≥75	19.643	1.67–230.5	0.018	1.020	0.33–3.17	0.973	0.237	0.03–1.95	0.181
pT size groups	pT1a	1			1			1
	pT1b	1.940	0.72–5.20	0.187	1.718	0.94–3.13	0.077	1.747	0.87–3.53	0.120
LVI	No	1			1			1
	Yes	2.168	0.40–11.74	0.369	0.983	0.33–2.96	0.976	0.566	0.13–2.52	0.455
Subtype	ER-positive	1			1			1
	ER-negative	1.246	0.50–3.09	0.635	1.677	0.95–2.97	0.077	1.667	0.84–3.31	0.144
pN status	pN0	1			1			1
	pN0(i+)/pN1mi	0.764	0.09–6.50	0.806	1.843	0.79–4.31	0.158	2.548	1.06–6.13	0.037
Chemotherapy	No	1			1			1
	Yes	0.259	0.07–0.97	0.046	0.272	0.13–0.56	<0.0001	0.288	0.13–0.65	0.003