Table 2.

Risk factors for lymph node metastasis in patients with NSCLC

Characteristics	Univariate analysis
	B	SE	95% CI	P-value
Age	− 0.573	0.520	0.203–1.564	0.271
Gender	1.211	0.661	0.919–12.272	0.067
Smoking status	− 0.395	0.808	0.138–3.279	0.625
Tumor size (cm)	1.362	0.549	1.332–11.455	0.013*
Tumor differentiation	0.061	0.162	0.773–1.461	0.709
PTBP3 expression	1.047	0.477	1.118–7.267	0.028*

* Statistical analyses were performed by the Logistic regression analysis, and P < 0.05 was considered significant