Related Experiment Video
Updated: Nov 4, 2025

Implementation of a Real-Time Psychosis Risk Detection and Alerting System Based on Electronic Health Records using CogStack
Published on: May 15, 2020
Development and Validation of a Web-Based Severe COVID-19 Risk Prediction Model.
Sang H Woo1, Arturo J Rios-Diaz2, Alan A Kubey3
1Department of Medicine, Division of Hospital Medicine, Thomas Jefferson University, Philadelphia, PA, USA.
A new web-based tool predicts severe COVID-19 risk using patient data. This model aids in early identification of high-risk patients for better resource allocation and treatment.
Area of Science:
- Medical Informatics
- Epidemiology
- Clinical Prediction Models
Background:
- Coronavirus disease 2019 (COVID-19) presents a significant global health challenge with high morbidity and mortality.
- Identifying patients at risk for severe outcomes is crucial for effective patient management and resource allocation.
Purpose of the Study:
- To develop and validate a web-based risk prediction model for identifying patients likely to develop severe COVID-19.
- Severe COVID-19 is defined as intensive care unit (ICU) admission, mechanical ventilation, or death.
Main Methods:
- A retrospective cohort study of 415 patients admitted to urban medical centers.
- Multivariable logistic regression was used to identify predictors of severe COVID-19.
- Models were developed on a derivation cohort (n=311) and validated on a separate cohort (n=104).
Main Results:
- Eight key predictors were identified: age, sex, dyspnea, diabetes mellitus, troponin, C-reactive protein, D-dimer, and aspartate aminotransferase.
- The prediction models demonstrated excellent discriminative ability for severe COVID-19 (validation AUC=0.82) and mortality (validation AUC=0.81).
- The validated models were integrated into a user-friendly, mobile-compatible website.
Conclusions:
- A validated web-based risk prediction tool for severe COVID-19 is now available.
- The model utilizes data commonly available at patient presentation for bedside use.
- This tool can significantly aid in the clinical decision-making process for COVID-19 patients.
Related Concept Videos
Sensitivity, Specificity, and Predicted Value
Sensitivity is the...
Prediction Intervals
However, the point estimate is most likely not the exact value of the population parameter, but close to it. After calculating point estimates, we construct interval estimates, called confidence intervals or prediction intervals. This prediction interval comprises a range of values unlike the point estimate and is a better predictor of the observed sample value, y.
Relative Risk
Steps in Outbreak Investigation
Statistical Methods for Analyzing Epidemiological Data

