Association of lymph node involvement with the prognosis of pathological T1 invasive non-small cell lung cancer

Table 4 Univariate and multivariable Cox analyses of overall IAC patient survival

Factors	Univariate analysis			Multivariable analysis
Factors	Hazard ratio	95% Confidence interval	P value	Hazard ratio	95% Confidence interval	P value
Gender (male vs. female)	0.495	0.241–1.015	0.055
Preoperative CEA levels (<5.0 vs. ≥5.0 IU/mL)	2.511	1.245–5.065	0.010	1.865	0.850–4.090	0.120
Lymph node metastasis (absent vs. present)	2.360	1.114–5.001	0.025	2.154	1.033–4.493	0.041

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