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Table 4 Summary of the correlation between features and grade group as well as the repeatability in transition zone cancer

From: DWI-related texture analysis for prostate cancer: differences in correlation with histological aggressiveness and data repeatability between peripheral and transition zones

Base image/features First/second Grade group Grade group 1, 2 vs. 3, 4, 5 ICC 95% CI Bland-Altman plot (%)
Spearman's ρ 95% CI p AUC of ROC    Bias SD of bias 95% LOA
ADC (100, 1,500), bin 32
SRHGE First 0.488 0.02898 to 0.7771 0.034 0.814 0.427 -0.011 to 0.73 -21.4 27.77 -75.83 to 33.04
Second 0.6912 0.3326 to 0.8752 0.001 0.943
busyness First -0.5039 -0.7853 to -0.05002 0.0278 0.814 0.576 0.188 to 0.811 21.1 77.36 -130.5 to 172.7
Second -0.6742 -0.8675 to -0.3039 0.0015 0.929
DWI 100, bin 32
skewness First -0.5232 -0.7951 to -0.07612 0.0215 0.829 0.629 0.266 to 0.837 -28.03 310.3 -636.2 to 580.1
Second -0.4699 -0.7676 to -0.005422 0.0424 0.786
HGRE First 0.5663 0.1368 to 0.8166 0.0115 0.857 0.658 0.312 to 0.852 -14.68 35.99 -85.22 to 55.85
Second 0.5516 0.1157 to 0.8093 0.0144 0.843
SRHGE First 0.5663 0.1368 to 0.8166 0.0115 0.857 0.619 0.251 to 0.833 -15.33 35.93 -85.76 to 55.1
Second 0.5902 0.1717 to 0.8282 0.0078 0.871
LRHGE First 0.4892 0.03047 to 0.7777 0.0335 0.8 0.802 0.563 to 0.918 -12.04 37.52 -85.58 to 61.5
Second 0.4744 0.01126 to 0.77 0.0401 0.786
HGZE First 0.5277 0.08236 to 0.7974 0.0202 0.829 0.558 0.161 to 0.802 -13.03 32.89 -77.5 to 51.44
Second 0.5277 0.08236 to 0.7974 0.0202 0.829
SZHGE First 0.5516 0.1157 to 0.8093 0.0144 0.843 0.373 -0.075 to 0.699 -14.48 33.09 -79.34 to 50.38
Second 0.6072 0.1974 to 0.8364 0.0058 0.886
busyness First -0.6151 -0.8401 to -0.2095 0.0051 0.900 0.548 0.148 to 0.797 9.866 44.39 -77.14 to 96.87
Second -0.4642 -0.7646 to 0.001836 0.0453 0.771
DWI 0, bin 32
skewness First -0.5743 -0.8205 to -0.1483 0.0101 0.871 0.575 0.185 to 0.81 -55.02 303.2 -649.3 to 539.2
Second -0.4982 -0.7824 to -0.04246 0.0299 0.800
HGRE First 0.5947 0.1785 to 0.8304 0.0072 0.871 0.579 0.192 to 0.813 -14.98 34.32 -82.24 to 52.28
Second 0.4721 0.008339 to 0.7688 0.0412 0.786
SRHGE First 0.614 0.2078 to 0.8396 0.0052 0.886 0.537 0.132 to 0.791 -15.22 34.93 -83.67 to 53.24
Second 0.4892 0.03047 to 0.7777 0.0335 0.8
HGZE First 0.5947 0.1785 to 0.8304 0.0072 0.871 0.524 0.115 to 0.784 -10.79 32.12 -73.75 to 52.18
Second 0.4937 0.03645 to 0.78 0.0317 0.8
  1. 95% CI 95% confidence interval, 95% LOA 95% Limit of agreement, AUC Area under the curve, HGRE High gray-level run emphasis, HGZE High gray-level zone emphasis, ICC Intraclass correlation coefficient, LRHGE Long-run high gray-level emphasis, ROC Receiver operating characteristic, SD Standard deviation, SRHGE Short-run high gray-level emphasis, SZHGE Short-zone high gray-level emphasis