Table 1 Basic information on the 152 patients with LS-SCLC

Total number of cases

50

102

Age (years old)

≥ 60 < 60

14 36

45 57

0.097

Gender

Male

Female

41

9

74

28

0.232

Primary tumor site

Left lung

Right lung

24

26

54

48

0.607

Basic diseases

(hypertension/diabetes)

No

Yes

40

10

77

25

0.550

TNM staging

I

II

III

25

9

16

50

19

33

0.937

Smoking history

No

Yes

31

19

48

54

0.088

PCI

No

Yes

12

38

35

67

0.262

Chemotherapy cycles

≥ 4

< 4

37

13

91

11

0.069