Imaging findings pre, during, and post-COVID-19 hospitalization.

The neurological cohort had pre- and post-COVID-19 imaging at 456 ± 729 days and 335 ± 274 days before and after hospitalization, respectively. The control cohort had pre- and post-COVID-19 imaging at 828 ± 974 and 432 ± 300 days before and after hospitalization, respectively. Patients who died during COVID-19 hospitalization are excluded. Imaging studies were scored as 0 (normal or no abnormality), 1 (mild abnormality), 2 (moderate abnormality), and 3 (severe abnormality). Mean ± SD or n (%). χ2 used to compare categorical variables and two-tailed t test use to compare continuous variables between groups.