Table 3.

Univariate and multivariate analyses of overall survival in NSCLC patients (n = 104)

Variable	Univariate analysis			Multivariate analysis
	Risk ratio	95% CI	P	Risk ratio	95% CI	P
Gender	0.278	0.257–2.058	0.549
Male vs. female
Age (years)	1.029	0.995–1.064	0.090
≤65 vs. >65
Smoking history	1.603	0.667–3.853	0.291
Smokers vs. never smokers
Histological subtype	1.338	0.518–3.453	0.547
SCC vs. ACC
Adjacent organs invasion	0.806	0.402–1.614	0.542
Negative vs. positive
Tumor size (cm)	1.017	0.881–1.174	0.821
≤5 vs. >5
Necrosis	1.177	0.579–2.393	0.652
Negative vs. positive
Lymph node metastasis	3.311	1.665–6.583	0.001*	1.802	0.684–4.746	0.233
Negative vs. positive
TNM stage	1.941	1.322–2.850	0.001*	1.498	0.867–2.587	0.148
I+II vs. III+IV
C9 expression of TAMs	0.367	0.167–0.807	0.013*	0.413	0.186–0916	0.029*
High vs. low

CI confidence interval, TAMs tumor-associated macrophages, SCC squamous cell carcinoma, ACC adenocarcinoma

*P < 0.05, overall