 Using clinical  data from a large cohort of over 14 ,000  patients, we modeled the four adverse outcomes utilizing about 600 features representing patients' before-COVID health records .
<meaning-changed>  Using clinical  data from a large cohort of over 14 ,000  patients, we modeled the four adverse outcomes utilizing about 600 features representing patients' before-COVID health records .
 Using clinical data from a large cohort of over 14 ,000 COVID-19-positive patients, we modeled the four adverse outcomes utilizing about 600 features representing patients' before-COVID health records .