Multispecialty Rating of Evidence-Based Conditions for Intravenous Immunoglobulin Therapy Using a 3-Axis Prioritization Algorithm.

Background: A 3-axis prioritization algorithm was proposed and was evaluated in a US multispecialist pilot study to obtain uniform consensus regarding effective practices for the use of intravenous immunoglobulin (IVIG) therapy.

Objective: The primary objective was to use consensus-building methodologies to rate disease states for IVIG utilization while considering disease severity and the efficacy of alternative therapeutic options to IVIG from the perspective of US multispecialists.

Methods: A 7-member multispecialty physician expert panel was surveyed to rate 50 disease states and to determine their level of agreement with the American Academy of Allergy, Asthma & Immunology (AAAAI) evidence-based medicine (EBM) ratings. The disease states were then rated across the 2 domains of disease severity and the perceived efficacy of therapeutic alternatives. An interquartile deviation (IQD) of ≤0.5 was used to determine consensus for disease states within each domain. Disease states reaching consensus across both domains were ranked according to a 2 × 4 algorithmic scale to establish priority for IVIG utilization.

Results: Overall, a high level of agreement was found with the AAAAI ratings for EBM. Based on an IQD of ≤0.5, the panel reached consensus on the severity of all 50 disease states. Of the 50 disease states, consensus was reached on the efficacy of therapeutic alternatives for 39 disease states. Using the same panel of experts, the 11 disease states without consensus in the first survey were resurveyed, and consensus was subsequently reached on 4 of them. Discussion among the experts, and the resurvey, resulted in expert consensus increasing from 78% to 86% postdiscussion and a change in the overall rating of IVIG on 4 conditions.

Conclusions: Multispecialty input of 7 experts on evidence-based IVIG use, augmented with disease severity and efficacy of therapeutic alternatives, enables a balanced perspective on IVIG therapy prioritization. Moreover, multispecialty dialogue improved consensus building among panel members on the effective use of IVIG therapy in several clinical conditions.