Table 3 Contrast-enhanced MRI findings according to response at each time point
Variable | Patients with pCR | Patients with non-pCR | P value | AUC | 95% CI | P value |
|---|---|---|---|---|---|---|
Pre-treatment | ||||||
 No. of patients | 54 | 90 |  |  |  |  |
 Size (mm) | 39.8 ± 21.2 | 44.3 ± 18.8 | 0.189 | 0.578 | 0.475, 0.681 | 0.119 |
 RER (%) | 164.1 ± 66.5 | 152.6 ± 57.0 | 0.271 | 0.551 | 0.452, 0.650 | 0.305 |
Mid-treatment | ||||||
 No. of patients | 37 | 64 |  |  |  |  |
 ΔSize (mm) | − 27.4 ± 16.6 | − 17.1 ± 14.2 | 0.001 | 0.698 | 0.591, 0.804 | 0.001 |
 ΔRER (%) | − 101.2 ± 81.1 | − 36.8 ± 81.1 |  < 0.001 | 0.706 | 0.603, 0.809 | 0.001 |
Post-treatment | ||||||
 No. of patients | 33 | 65 |  |  |  |  |
 ΔSize (mm) | − 34.0 ± 18.9 | − 24.6 ± 18.5 | 0.021 | 0.661 | 0.549, 0.774 | 0.009 |
 ΔRER (%) | − 135.1 ± 81.4 | − 60.5 ± 79.8 |  < 0.001 | 0.734 | 0.633, 0.836 |  < 0.001 |