Table 2 Spearman’s rank correlation test of semi-quantitative PET/CT-based response and clinical response

Clinical response

 r (95% CI)

− 0.780 (− 0.923 to − 0.446)

− 0.761 (− 0.916 to − 0.408)

− 0.725 (− 0.902 to − 0.339)

− 0.411 (− 0.763 to 0.129)

− 0.411 (− 0.763 to 0.129)

− 0.357 (− 0.735 to 0.190)

 p

0.0006*

0.001*

0.0022*

0.1283

0.1283

0.1910

∆M-pro%

 r (95% CI)

0.821 (0.532 to 0.938)

0.796 (0.478 to 0.929)

0.724 (0.337 to 0.902)

0.439 (− 0.0942 to 0.777)

0.439 (− 0.0942 to 0.777)

0.447 (− 0.0846 to 0.781)

 p

0.0002*

0.0004*

0.0023*

0.1013

0.1013

0.0948

∆IgM%

 r (95% CI)

0.764 (0.414 to 0.917)

0.739 (0.365 to 0.908)

0.654 (0.212 to 0.873)

0.469 (− 0.0573 to 0.791)

0.469 (− 0.0573 to 0.791)

0.430 (− 0.106 to 0.772)

 p

0.0009*

0.0016*

0.0082*

0.0780

0.0780

0.1097