Author: Bello-Chavolla, Omar Yaxmehen; Antonio-Villa, Neftali E.; Ortiz-Brizuela, Edgar; Vargas-Vázquez, Arsenio; González-Lara, MarÃa Fernanda; de Leon, Alfredo Ponce; Sifuentes-Osornio, José; Aguilar-Salinas, Carlos A.
Title: Validation and repurposing of the MSL-COVID-19 score for prediction of severe COVID-19 using simple clinical predictors in a triage setting: The Nutri-CoV score Cord-id: mibjtiu1 Document date: 2020_12_16
ID: mibjtiu1
Snippet: BACKGROUND: During the COVID-19 pandemic, risk stratification has been used to decide patient eligibility for inpatient, critical and domiciliary care. Here, we sought to validate the MSL-COVID-19 score, originally developed to predict COVID-19 mortality in Mexicans. Also, an adaptation of the formula is proposed for the prediction of COVID-19 severity in a triage setting (Nutri-CoV). METHODS: We included patients evaluated from March 16(th) to August 17(th), 2020 at the Instituto Nacional de Ci
Document: BACKGROUND: During the COVID-19 pandemic, risk stratification has been used to decide patient eligibility for inpatient, critical and domiciliary care. Here, we sought to validate the MSL-COVID-19 score, originally developed to predict COVID-19 mortality in Mexicans. Also, an adaptation of the formula is proposed for the prediction of COVID-19 severity in a triage setting (Nutri-CoV). METHODS: We included patients evaluated from March 16(th) to August 17(th), 2020 at the Instituto Nacional de Ciencias Médicas y Nutrición, defining severe COVID-19 as a composite of death, ICU admission or requirement for intubation (n = 3,007). We validated MSL-COVID-19 for prediction of mortality and severe disease. Using Elastic Net Cox regression, we trained (n = 1,831) and validated (n = 1,176) a model for prediction of severe COVID-19 using MSL-COVID-19 along with clinical assessments obtained at a triage setting. RESULTS: The variables included in MSL-COVID-19 are: pneumonia, early onset type 2 diabetes, age > 65 years, chronic kidney disease, any form of immunosuppression, COPD, obesity, diabetes, and age <40 years. MSL-COVID-19 had good performance to predict COVID-19 mortality (c-statistic = 0.722, 95%CI 0.690–0.753) and severity (c-statistic = 0.777, 95%CI 0.753–0.801). The Nutri-CoV score includes the MSL-COVID-19 plus respiratory rate, and pulse oximetry. This tool had better performance in both training (c-statistic = 0.797, 95%CI 0.765–0.826) and validation cohorts (c-statistic = 0.772, 95%CI 0.0.745–0.800) compared to other severity scores. CONCLUSIONS: MSL-COVID-19 predicts inpatient COVID-19 lethality. The Nutri-CoV score is an adaptation of MSL-COVID-19 to be used in a triage environment. Both scores have been deployed as web-based tools for clinical use in a triage setting.
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