Table 4.

Regression analyses for adjuvant chemotherapy in pT1a-b, pN0 or (pN0(i+) and pN1mi) breast cancer.

Chemotherapy: Regression		OR	CI 95%	p
Grade	1	1
	2	3.834	1.83–8.04	<0.0001
	3	12.822	5.64–29.16	<0.0001
Subtype	Type_Mol(1)	2.118	1.31–3.42	0.002
Age	≤40	1
	40.1–50	0.411	0.16–1.05	0.063
	50.1–74.9	0.273	0.12–0.65	0.003
	≥75	0.101	0.03–0.38	0.001
LVI	No	1
	Yes	6.721	2.27–19.90	0.001
	unknown	0.334	0.18–0.60	<0.0001
pT size	pT1b	3.189	1.98–5.13	<0.0001
pN	pN0(i+) & pN1mi	2.137	0.94–4.88	0.071