PT - JOURNAL ARTICLE AU - Mark H. Ebell AU - Robert P. Lennon AU - Derjung M. Tarn AU - Bruce Barrett AU - Alex H. Krist AU - Huamei Dong AU - Xinyan Cai AU - Arch G. Mainous III AU - Aleksandra E. Zgierska AU - Wen-Jan Tuan AU - Munish Goyal TI - External Validation of the COVID-NoLab and COVID-SimpleLab Prognostic Tools AID - 10.1370/afm.2872 DP - 2022 Nov 01 TA - The Annals of Family Medicine PG - 548--550 VI - 20 IP - 6 4099 - http://www.annfammed.org/content/20/6/548.short 4100 - http://www.annfammed.org/content/20/6/548.full SO - Ann Fam Med2022 Nov 01; 20 AB - Our objective was to externally validate 2 simple risk scores for mortality among a mostly inpatient population with COVID-19 in Canada (588 patients for COVID-NoLab and 479 patients for COVID-SimpleLab). The mortality rates in the low-, moderate-, and high-risk groups for COVID-NoLab were 1.1%, 9.6%, and 21.2%, respectively. The mortality rates for COVID-SimpleLab were 0.0%, 9.8%, and 20.0%, respectively. These values were similar to those in the original derivation cohort. The 2 simple risk scores, now successfully externally validated, offer clinicians a reliable way to quickly identify low-risk inpatients who could potentially be managed as outpatients in the event of a bed shortage. Both are available online (https://ebell-projects.shinyapps.io/covid_nolab/ and https://ebell-projects.shinyapps.io/COVID-SimpleLab/).