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Updated: Jun 27, 2025
Basophil Activation Test for Allergy Diagnosis
Published on: May 31, 2021
Racial and Socioeconomic Disparities Exist in Patients Pursuing Peanut Oral Immunotherapy
Lindsay A Gallagher1, Charles F Schuler1, Jonathan P Troost2
1Division of Allergy and Clinical Immunology, Department of Internal Medicine, University of Michigan, Ann Arbor, Mich; Mary H. Weiser Food Allergy Center, University of Michigan, Ann Arbor, Mich.
Background:
Oral immunotherapy (OIT) is a promising treatment for food allergy. Prior studies demonstrate significant differences among food-allergic individuals across race, ethnicity, and socioeconomic groups. Disparities in OIT have not been evaluated.
Objective:
We assessed disparities in the use of OIT in patients with peanut allergy based on race, ethnicity, and socioeconomic status at a single academic medical center.
Methods:
We identified 1028 peanut-allergic patients younger than 18 years receiving care in the University of Michigan food allergy clinics. Of these, 148 patients who underwent peanut OIT (treatment group) were compared with the 880 patients who avoided peanut (control group). Pertinent demographic and socioeconomic characteristics were compared.
Results:
There were no differences in gender or ethnicity between the OIT and control groups. However, Black patients comprised 18% of the control group but only 4.1% of the OIT treatment group (P < .0001). The proportion of patients with private insurance was significantly higher in the treatment group compared with the control group (93.2% vs 82.2%, P = .0004). Finally, the neighborhood affluence index, a census-based measure of the relative socioeconomic prosperity of a neighborhood, was significantly higher in the OIT group than the control group (0.51 ± 0.18 vs 0.47 ± 0.19, P = .015), whereas the neighborhood disadvantage index, a census-based measure of the relative socioeconomic disadvantage of a neighborhood, was significantly lower (0.082 ± 0.062 vs 0.10 ± 0.093, P = .020).
Conclusions:
Significant racial and economic disparities exist at our institution between peanut-allergic individuals who receive OIT and those who do not. Efforts to understand the basis for these disparities are important to ensure that patients have equitable access to OIT.
