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Table 1: Group comparisons: low- versus high-grade tumor
Variable Low-Grade (Mean) High-Grade (Mean) Mean Diff Mean SE Lower 95% CL Upper 95% CL P Value (T Test) χ² (Wilcoxon) P Value (Wilcoxon)
K^trans (min⁻¹) 0.14 1.50 1.36 0.45 0.46 2.27 .004 16.72 <.001
K_ep (min⁻¹) 1.18 8.85 7.67 1.99 3.64 11.70 <.001 18.98 <.001
v_e 0.22 0.13 −0.09 0.02 −0.13 −0.05 <.001 13.41 <.001
v_p 0.05 0.05 0.00 0.01 −0.02 0.02 .764 0.23 .630
FL_ADC_mean (×10⁻⁶ mm²/s) 1458 1022 −436 84.47 −607 −265 <.001 15.65 <.001
FL_ADC_SD (×10⁻⁶ mm²/s) 336.8 285.0 −51.8 36.01 −125 21.06 .158 .56 .454
FL_ADC_skew 0.45 1.24 0.80 0.26 0.27 1.32 .004 7.55 .006
FL_ADC_kurt 1.28 1.97 0.70 0.73 −0.79 2.18 .347 1.58 .208
PG_ADC_mean (×10⁻⁶ mm²/s) 1472 1066 −406 100.7 −610 −203 <.001 11.70 <.001
PG_ADC_SD (×10⁻⁶ mm²/s) 261.0 308.4 47.46 40.47 −34.4 129.3 .248 1.93 .165
PG_ADC_skew 0.69 1.30 0.61 0.30 0.01 1.21 .047 2.26 .133
PG_ADC_kurt 2.51 2.31 −0.20 0.93 −2.09 1.70 .835 0.34 .560
Note:—Diff indicates difference; SE, standard error; CL, confidence limit; skew, skewness; kurt, kurtosis.