Table 2.

Multivariate analysis of prognostic factors in NSCLC patients

Features	Risk ratio	95% CI	P‐value
Sex	1.35	0.85‐1.97	.163
Age	1.24	0.72‐1.83	.148
Histology	2.56	1.24‐4.02	.108
Tumor size	2.87	1.36‐4.48	.086
Differentiation	3.16	1.55‐4.93	.071
Lymph node metastasis	4.14	1.80‐6.62	.017
Tumor‐node‐metastasis	4.38	1.93‐6.98	.009
Serum exosomal miR‐378	3.95	1.71‐6.26	.024