Emergency Medicine · Infectious Disease · Pulmonology
COVID Home Safely Now (CHOSEN) Risk Score calculator
Enter the published formula inputs below to calculate and interpret this score.
Clinical inputs
Allowed range: 18–120 years
18–45 years scores 5, 46–59 scores 2, 60–73 scores 1, and older than 73 scores 0.
Allowed range: 50–100 %
Under 94% scores 0, 94–96% scores 9, 97–98% scores 14, and above 98% scores 21.
Allowed range: 1–6 g/dL
Under 2.8 g/dL scores 0, 2.8–3.3 scores 5, 3.4–3.7 scores 15, and above 3.7 scores 29. The table leaves 3.31–3.39 g/dL unassigned.
Result
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Clinical inputs
- Age (years)Accepted range: 18 to 120
- Oxygen saturation (%)Accepted range: 50 to 100
- Serum albumin (g/dL)Accepted range: 1 to 6
Primary source
Levine DM et al. Derivation of a Clinical Risk Score to Predict 14-Day Occurrence of Hypoxia, ICU Admission, and Death Among Patients with Coronavirus Disease 2019. J Gen Intern Med. DOI: 10.1007/s11606-020-06353-5. PMID: 33274414. Table 2 points: age 18–45 years 5, 46–59 years 2, 60–73 years 1, older than 73 years 0. Oxygen saturation under 94% is 0, 94–96% is 9, 97–98% is 14, and above 98% is 21. Albumin under 2.8 g/dL is 0, 2.8–3.3 g/dL is 5, 3.4–3.7 g/dL is 15, and above 3.7 g/dL is 29. The printed score runs from 0 to 55. A higher score means greater suitability for discharge. The cut point that maximized the sum of sensitivity and specificity was 30, with sensitivity 83.2% and specificity 82.2%. The table does not assign 3.31–3.39 g/dL. (2021)
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