Table 2.
Characteristics of Each Radiomics Feature Extracted and Corresponding Coefficients for Predicting Overall Survival (N = 102)
| Filter Type | Feature Class | Statistic | Coefficients | |
|---|---|---|---|---|
| Intercept | – | – | 1.130 | |
| R1 | wavelet.HHH | First-order | Entropy | 0.116 |
| R2 | wavelet.LHH | First-order | Mean | 0.048 |
| R3 | wavelet.HLH | GLCM | DE | 0.577 |
| R4 | wavelet.HHL | GLRLM | HGLRE | 0.028 |
| R5 | wavelet.HLH | GLSZM | GLV | 0.293 |
| R6 | wavelet.HLL | GLSZM | SZNN | 0.005 |
| R7 | wavelet.HLL | GLSZM | HGLZE | 0.273 |
| R8 | wavelet.LLH | GLSZM | LGLZE | 0.022 |
| R9 | wavelet.LLH | GLSZM | SALGLE | 0.245 |
Abbreviations: DE, difference_entropy; GLCM, gray level co-occurrence matrix; GLRLM, gray level run length matrix; GLSZM, gray level size zone matrix; GLV, gray_level_variance; HGLRE, high_gray_level_run_emphasis; HGLZE, high_gray_level_zone_emphasis; LGLZE, low_gray_level_zone_emphasis; SALGLE, small_area_low_gray_level_emphasis; SZNN, size_zone_non-uniformity_normalized.