Independent risk factors for axillary lymph node metastasis in breast cancer patients with one or two positive sentinel lymph nodes

Table 3 Multivariable logistic regression analyses of the risk factors associated with ALN metastasis in breast cancer patients with one or two positive SLNs

	Parameter	β	SE	P	OR	95% CI
	Intercept	−0.5262	0.4468	0.239
X1	Age	−0.4902	0.2447	0.0451	0.612	0.379–0.989
X2	Occupation	−0.2414	0.1155	0.0365	0.786	0.626–0.985
X17	Ratio of positive to total SLNs	0.9565	0.1982	< 0.0001	2.603	1.765–3.838

Abbreviations: OR odds ratio, CI confidential interval, SLN sentinel lymph node, ALN axillary lymph node. Logit(P) = − 0.5262 − 0.4902X₁ − 0.2414X₂ + 0.9565X₁₇

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