Table 1. Distribution of patients with non-small cell lung cancer treated surgically at INCA from 2010 to 2016.

Characteristics	Microvascular invasion				Total
	Absent		Present		p-value
	N	%	N	%		N	%
Total	68	74.7	23	25.3	-	91	100.0
Age group
< 60 years	22	32.4	10	43.5	0.334	32	35.2
≥ 60 years	46	67.6	13	56.5		59	64.8
Sex
Male	30	44.1	10	43.5	0.957	40	44.0
Female	38	55.9	13	56.5		51	56.0
Race
White	41	60.3	16	69.6	0.427	57	62.6
Non-white	27	39.7	7	30.4		34	37.4
Smoking status
Never smoked	11	16.2	3	13.0	0.500	14	15.4
Current or former smoker	57	83.8	20	87.0		77	84.6
Smoking load
< 40 pack-years	18	31.6	5	25.0	0.898	23	29.9
40-59 pack-years	17	29.8	7	35.0		24	31.2
≥ 60 pack-years	22	38.6	8	40.0		30	39.0
Performance Status (PS)
0	27	39.7	6	26.1	0.240	33	36.3
1	41	60.3	17	73.9		58	63.7
Maximum SUV
< 10	38	64.4	8	40.0	0.056	46	58.2
≥ 10	21	35.6	12	60.0		33	41.8
Tumor size
pT1	21	30.9	4	17.4	0.157	25	27.5
pT2	37	54.4	11	47.8		48	52.7
pT3	8	11.8	6	26.1		14	15.4
pT4	2	2.9	2	8.7		4	4.4
pN
pN0	61	89.7	12	52.2	< 0.001	73	80.2
pN1	2	2.9	8	34.8		10	11.0
pN2	5	7.4	3	13.0		8	8.8
Pathological stage
IA	21	30.9	2	8.7	0.003	23	25.3
IB	24	35.3	3	13.0		27	29.7
IIA	8	11.8	7	30.4		15	16.5
IIB	8	11.8	3	13.0		11	12.1
IIIA	7	10.3	8	34.8		15	16.5
Histological subtype
Adenocarcinoma	46	67.6	15	65.2	0.191	61	67.0
Squamous cell carcinoma	20	29.4	5	21.7		25	27.5
Other	2	2.9	3	13.0		5	5.5

Abbreviations: N, number of patients; SUV, standardized uptake value; pN, pathological staging nodal descriptor.