Figure 4.

ORs for the effect of vaccination on the risk of severe COVID-19 among patients with and without prior use of belimumab, rituximab or corticosteroids. ¹Estimates from a backward stepwise logistic regression model containing the following variables: evidence of COVID-19 vaccination, belimumab use, rituximab use, corticosteroid use, diagnoses in the 12-month baseline period (deficiency anaemia, complicated and uncomplicated diabetes, complicated and uncomplicated hypertension, renal failure), age, sex, insurance type (Commercial, Medicare, Medicaid), time period of initial COVID-19 diagnosis, and interactions between COVID-19 vaccination and belimumab, rituximab and corticosteroids; ²Belimumab and rituximab use assessed in the 6 months prior to patients’ initial COVID-19 diagnosis; ³Corticosteroid use assessed in the 30 days prior to patients’ initial COVID-19 diagnosis.