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. 2021 May-Jun;47(3):e20200378. doi: 10.36416/1806-3756/e20200378

Table 1. Characteristics of the patients included in the study (N = 231).a .

Characteristic Group P
Adjuvant chemotherapy No adjuvant chemotherapy
(n = 80) (n = 151)
Age, years 63.0 [45.3-79.1] 68.3 [34.0-87.9] < 0.001*
Sex
Male
Female

36 (45.0)
44 (55.0)

73 (48.3)
78 (51.7)
0.388
Type of surgery
Pneumonectomy
Lobectomy
Other

12 (15.0)
61 (76.2)
7 (8.7)

12 (7.9)
134 (88.7)
5 (3.3)
0.005
Histology
SCC
Adenocarcinoma
Other
Not available

21 (26.2)
53 (66.2)
6 (7.5)
0 (0)

48 (31.8)
92 (60.9)
10 (6.6)
1 (0.7)
0.747
Stage
I
II
III
Not available

2 (2.5)
44 (54.9)
34 (42.5)
0 (0)

85 (56.3)
41 (27.1)
24 (15.9)
1 (0.7)
< 0.001
Lymph node status
N0
N1
N2
Not available

25 (31.2)
27 (33.7)
27 (33.7)
1 (1.2)

102 (67.5)
17 (11.3)
14 (9.3)
18 (11.9)
< 0.001
ECOG-PS before chemotherapy
0
1
2
Not available

22 (27.5)
48 (60.0)
1 (1.2)
9 (11.2)

-
-
Radiation therapy
Yes

13 (16.2)

5 (3.3)

SCC: squamous cell carcinoma; and PS: performance status. aValues expressed as median [range] or n (%). *Student’s t-test. Fisher’s exact test.