Post-COVID-19 complications in hospitalized and non-hospitalized patients: the Silesian complications of the COVID-19 (SILCOV-19) database

Due to the extent of the pandemic, a high prevalence and severity of complications in the early post-recovery period are expected. This study aimed to compare the scope of early complications after COVID-19 in patients who had the disease with and without hospitalization. This study was designed as a prospective observational registry-based cohort study at the tertiary cardiovascular hospital in Silesia, Poland. The interdisciplinary diagnostics during the study visit, including cardiovascular, pneumatological, neurological, and psychiatric tests, were performed. All patients completed the study. Two-hundred unselected adult Caucasian men and women who had symptoms of COVID-19 in the acute phase were included, of which 86 patients had the disease without the need for hospitalization. The median (IQR) time from symptom onset to the study visit was 107 (87-117) and 105 (79-127) days in non-hospitalized and hospitalized patients, respectively. Lung lesions in high-resolution computed tomography were found in 10 (8.8%) and 33 (39.3%) non-hospitalized and hospitalized patients (P