Covid-19 in patients with rheumatic diseases: Comparison of data from the argentine registry (sar-covid), with the latin american and global (Global Rheumatology alliance)

ABSTRACT

Objectives: To compare characteristics of patients with rheumatic disease and COVID-19 in Argentina (SAR-COVID Registry), in contrast to the data reported at the Latin American and global level (Global International Alliance RheumCOVID Registry). Methods: A national, multicenter, longitudinal and observational registry was carried out. Patients older than 18 years, with a diagnosis of rheumatic disease and SARS-CoV-2 infection by PCR or positive serology, were included between August 13, 2020 and April 11, 2021. Demographic data, underlying rheumatic disease, comorbidities, clinical-laboratory characteristics of the SARS-CoV-2 infection, as well as treatments and outcomes. Characteristics of the patients included were compared with the data reported at the Latin American and global level. Descriptive statistics were performed. Comparisons between groups were made using ANOVA, chi2 or Fisher's test. Results: 863 patients from Argentina, 74 patients from Latin America and 583 from the rest of the world were included, mostly women in the three groups (79.4%, 73% and 71% respectively). The most frequent rheumatic diseases in the three groups were rheumatoid arthritis (45.8%, 35%, and 39%, respectively) and systemic lupus erythematosus (18%, 22%, and 14%) (Table 1). In Argentina, fewer patients received specific pharmacological treatment for COVID-19 in relation to the other 2 groups (41.4%, 68% and 43% respectively, p < 0.0001), and there was a lower requirement for non-invasive/invasive mechanical ventilation than in the rest of Latin America and theworld (8.6%vs 31% vs 13%, p < 0.0001). Hospitalization requirement in Argentina was lower than in the rest of Latin America and the rest of theworld (32.8%vs 61% vs 45%, p < 0.0001), as well as mortality (5.8%, 12%and 11%;p 0.0010). 86.9% of patients did not present any complications in Argentina, with a statistically significant difference with the rest of the groups (62% and 77%, with p < 0.0001) (Figure 1). Conclusion: Patients with rheumatic diseases and SARS-CoV-2 infection from Argentina reported in this registry received less specific pharmacological treatment for COVID-19 than those registered in other countries, presented fewer complications and required less ventilatory support. In relation to mortality, although a lower mortality was found in the Argentine registry. The fact that registries have information collected at different periods of the pandemic and different local epidemiological situations, does not allow major conclusions to be drawn.