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Tasa de letalidad de COVID-19 condicionada por factores de riesgo en México en 2020 / COVID-19 fatality rate conditioned by risk factors in Mexico in 2020

Hid Felizardo Cordero-Franco, Francisco Javier Guzmán-De la Garza, Ana María Salinas-Martínez

Resumen


 

Resumen

Introducción: la letalidad de la COVID-19 mostró grandes variaciones durante el primer año de la pandemia y dichas discrepancias parecen indicar diferentes niveles de riesgo de muerte entre poblaciones. En muy pocos estudios se logró estratificar la letalidad por la presencia o ausencia de factores de riesgo.

Objetivo: identificar las tasas de letalidad de COVID-19 condicionadas por factores de riesgo.

Material y métodos: análisis secundario de una base de datos abiertos de la Secretaría de Salud de México, con pacientes estudiados del 1 de enero de 2020 al 6 de enero de 2021. Se incluyeron pacientes con prueba positiva de COVID-19; se excluyeron aquellos con 5 o más  factores de riesgo y combinaciones de factores poco frecuentes. La muestra final estuvo conformada por 394,537 pacientes. Se segmentó la base de datos en grupos de 0, 1, 2, 3 y 4 factores de riesgo. Se estimó la tasa de letalidad condicionada por factores de riesgo (83 combinaciones).

Resultados: en los pacientes con 0 factores la tasa de letalidad fue de 2.1%. En aquellos con solamente la edad ≥ 50 años fue de 20.2%. La combinación de factores con la mayor letalidad fue edad ≥ 50 años + diabetes + obesidad (57.1%).

Conclusiones: las tasas de letalidad de COVID-19 condicionadas por factores de riesgo variaron de 1.7% hasta 57.1%, según la ausencia o presencia de ciertas comorbilidades. Estudios como este son necesarios para abordar con mayor precisión el riesgo de muerte entre subpoblaciones expuestas a diferentes factores de riesgo.

 

Abstract

Background: The COVID-19 fatality rate exhibited significant variations during the first year of the pandemic, and such divergences seem to show different levels of risk of death among populations. Very few studies stratified fatality based on the presence or absence of risk factors.

Objective: To identify COVID-19 fatality rates conditioned by risk factors.

Material and methods: Secondary analysis using an open health database from the Secretariat of Health of Mexico (Secretaría de Salud), covering patients studied from January 1, 2020, to January 6, 2021. Patients with confirmed COVID-19 result were included; those with 5 risk factors or more, or with rare combinations of factors were excluded. The final sample consisted of 394,537 patients. The database was segmented into groups based on 0, 1, 2, 3, and 4 risk factors. The fatality rate conditioned by risk factors was estimated (83 combinations).

Results: Among patients with 0 risk factors, the fatality rate was 2.1%. In those aged ≥ 50 years alone or more, the fatality rate was 20.2%. The combination of factors with the highest fatality rate was age ≥ 50 years + diabetes + obesity (57.1%).

Conclusions: COVID-19 fatality rates conditioned by risk factors ranged from 1.7% to 57.1%, according to the presence or absence of specific comorbidities. Studies like this are necessary to address more precisely the risk of death among subpopulations exposed to different risk factors.


Palabras clave


Mortalidad; Factores de Riesgo; Grupos de Riesgo; Pandemias; COVID-19 / Mortality; Risk Factors; Risk Groups; Pandemics; COVID-19

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DOI: https://doi.org/10.24875/10.5281/zenodo.12668018

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