Table 1 New risk scoring system created from the extracted VTE risk factors

Overview of the risk score

 Sex, Female (vs. Male)

0.730

2.076

0.004

1

 Adenocarcinoma (vs. non-small cell lung cancer, others)

0.845

2.327

0.006

1

 N type, 3 (vs. 0–2)

0.754

2.125

0.003

1

 Eastern Co-operative Oncology group performance status, 1–3 (vs. 0)

0.754

2.125

0.008

1

 Lymphocyte percentage < 18%

0.763

2.145

0.003

1

 Platelet count < 280,000/μL

0.747

2.110

0.006

1

 Prothrombin fragment 1 + 2 ≥ 325 pmol/L

0.768

2.155

0.002

1

 Diastolic blood pressure ≥ 70 mmHg

0.658

1.931

0.018

1

Estimation of the VTE incidence rate using the new risk-assessment scoring system

 0

0.003

 1

0.007

 2

0.015

 3

0.031

 4

0.064

 5

0.127

 6

0.237

 7

0.398

 8

0.584