Outcome by iPET response. Time to progression from the day of iPET in relation to the iPET result for all patients and for the subgroups of patients with DLBCL, PMBCL, FL grade 3, ALK⁺ ALCL, and ALK⁻ PTCL. The numbers in parentheses represent 95% CIs. The negative predictive values (NPVs) and positive predictive values (PPVs; categorization irrespective of follow-up time) of the iPET result for progression or relapse are also indicated. Similar results were obtained for event-free survival, progression-free survival, and OS (data not shown). No., number; p, log-rank test.