Secondary database originated from the Influenza Epidemiological Surveillance Information System (SIVEP-Gripe) containing data from adult patients aged 20 to 89 years admitted to hospital due to SARS by COVID-19 in the pre-vaccination period in Brazil.
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From an initial sample of over a million patients registered in SIVEP-Gripe in the pre-vaccination period in Brazil, we included in this database data from 313,898 adult patients aged 20 to 89 years admitted to hospital due to SARS by COVID-19 and confirmed by polymerase chain reaction testing (RT-PCR) or antigenic tests. We reviewed the comorbidities to define our study group and split patients into two groups: 1) 164,119 patients without risk factors (BMI < 24.9 kg/m2 or without comorbidities) and 2) 149,779 patients with any composition of the following characteristics: overweight or obesity (BMI ≥ 25 kg/m2), DM, cardiovascular disease CVD (including hypertension and dyslipidemia), or any combination of these risk factors. Any other comorbidity was excluded, as well as pregnant or puerperal women. The data dictionary is available at https://opendatasus.saude.gov.br/dataset/9f76e80f-a2f1-4662-9e37-71084eae23e3/resource/b3321e55-24e9-49ab-8651-29cf5c8f3179/download/dicionario_de_dados_srag_hospitalizado_23.03.2021.pdf