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

Table 5 Univariate and multivariable Cox analyses of overall pT1 IAC and SCC 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)	0.493	0.263–0.926	0.028	0.525	0.279–0.988	0.046
Preoperative CEA levels (<5.0 vs. ≥5.0 IU/mL)	2.777	1.599–4.824	<0.0001	2.455	1.395–4.321	0.002
Lymph node metastasis (absent vs. present)	2.189	1.239–3.866	0.007	1.736	0.970–3.109	0.063

CEA carcinoembryonic antigen, IAC invasive lung adenocarcinoma, SCC squamous cell lung cancer

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