Table 1 Patients’ clinical characteristics according to tumor response pattern (n = 155)^a

Age (year)

58.96 ± 10.2

65.19 ± 9.1

0.002

Gender, Female: Male

3:23

35:94

0.092

Smoking history (pack/y)

29.3 ± 19.6

24.41 ± 21.6

0.284

  < 20

5

51

0.049

  ≥ 20

21

78

Histologic subtype

0.061

 Adenocarcinoma

14

93

 Squamous cell carcinoma

11

34

 Others

1

2

Oncogenic driver mutations

 Yes: No

8:18

16:113

0.018

 EGFR mutation

5

7

 ALK, ROS1, and others

3

9

Number of metastatic sites

0.005

  < 3

17

113

  ≥ 3

9

16

Prior treatment lines before ICBs

0.139

  < 3

21

117

  ≥ 3

5

12