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Table 2 Selected features and their importance rank for the training and validation cohort

From: CT radiomics-based long-term survival prediction for locally advanced non-small cell lung cancer patients treated with concurrent chemoradiotherapy using features from tumor and tumor organismal environment

Importance rank

Training cohort

Validation cohort

Selected features

Category

IW

Selected features

Category

IW

1

GLRLM_SRE

Tumor

0.0451

SHAPE_Volume_mL

Lung

0.1439

2

SHAPE_Volume_mL

Lung

0.0426

GLZLM_GLNUz

Tumor

0.1122

3

CONV_SUVstd

Tumor

0.0177

GLRLM_RP

Lung

0.0776

4

CONV_SUVstd

Lung

0.0169

GLRLM_SRE

Tumor

0.0643

5

GLRLM_RP

Lung

0.0143

HISTO_Entropy_log10

Tumor

0.0541

6

GLZLM_GLNUz

Tumor

0.0126

CONV_SUVstd

Lung

0.0372

7

HISTO_Entropy_log10

Tumor

0.0121

TLG_mL

Tumor

0.0224

8

GLRLM_LRE

Lung

0.0036

GLRLM_LRE

Lung

0.0066

9

TLG_mL

Tumor

0.0006

CONV_SUVstd

Tumor

<0.0001

  1. Abbreviations: IW, importance weight; GLRLM, grey-level run length matrix; SRE, short-run emphasis; RP, run percentage; GLZLM, grey-level zone length matrix; GLNUz, gray-level non-uniformity for zone; LRE, long-run emphasis; TLG, total lesion glycolysis