Prognostic superiority of International Prognostic Index over [18F]FDG PET/CT volumetric parameters in post-transplant lymphoproliferative disorder

EJNMMI Research

Table 3 Overall survival analysis—forward stepwise selection and Bootstrapping

Forward model selection			Bootstrapping
	HR (95% CI)	p-value	p-value
Step 1
International Prognostic Index		≤ 0.01
Step 2
International Prognostic Index		≤ 0.01
EBV tumor status		≤ 0.01
Final model
Step 3
International Prognostic Index	1.56 (1.13–2.16)	≤ 0.01	0.01
EBV tumor status		≤ 0.01	0.01
EBV-negative	2.71 (1.38–5.32)
Transplanted organ		0.02	0.02
Kidney	0.38 (0.16–0.89)