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Table 1 Baseline characteristics of the patients and controls

From: Elevated serum soluble programmed cell death ligand 1 concentration as a potential marker for poor prognosis in small cell lung cancer patients with chemotherapy

 

SCLC a

Control

P value

Total (n)

250

250

–

Age (n)

64.5 ± 5.8

65.0 ± 5.8

0.381

Gender (n)

 Female

53

67

0.143

 Male

197

183

 

Smoking history (n)

 Non-smoker

107

135

0.012

 Smoker

143

115

 

Performance status

 0–1

218

–

–

 2

32

–

–

Tumor grade (n)

 High-middle

193

–

–

 Low

57

–

–

Tumor stage (n)

 LDa

143

–

–

 EDa

107

–

–

EGFR (n)a

 Negative

202

–

–

 Positive

48

–

–

KRAS (n)a

 Negative

234

–

–

 Positive

16

–

–

Serum PD-L1 (ng/ml)a

7.0 ± 3.0

1.2 ± 0.6

<0.001

  1. aSCLC Small cell lung cancer, LD Limited disease, ED Extensive disease, EGFR Epidermal growth factor receptor, KRAS Kirsten rat sarcoma viral oncogene, PD-L1 Programmed death ligand 1
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Respiratory Research

ISSN: 1465-993X

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