Statistical Modeling of Deaths from COVID-19 Influenced by Social Isolation in Latin American Countries
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2022-05-01
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Silva, Rafael Andre da [UNESP]
Ferreira, Luiz Philipe de Souza
Leite, Jean Michel Rocha Sampaio
Tiraboschi, Fernanda Assunção
Valente, Thiago Maciel
Roda, Vinicius Moraes de Paiva
Sanchez, Jeniffer Johana Duarte
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Social isolation is extremely important to minimize the effects of a pandemic. Latin American countries have similar socioeconomic characteristics and health system infrastructures. These countries face difficulties in dealing with the COVID-19 pandemic, and some of them have very high death rates. The government stringency index (GSI) of 12 Latin American countries was gathered from the Oxford COVID-19 Government Response Tracker project. The GSI is calculated by considering nine social distancing and isolation measures. Population data from the United Nations Population Fund and number-of-deaths data were collected from the dashboard of the WHO. We performed an analysis of the data collected from March through December 2020 using a mixed linear model. Peru, Brazil, Chile, Bolivia, Colombia, Argentina, and Ecuador had the highest death rates, with an increasing trend over time. Suriname, Venezuela, Uruguay, Paraguay, and Guyana had the lowest death rates, and these rates remained steady. The GSI in most countries followed the same pattern during the months analyzed. In other words, high indices at the beginning of the pandemic and lower indices in the latter months, whereas the number of deaths increased during the entire period. Almost no country kept its GSI high for a long time, especially from October to December. Time and GSI, as well as their interaction, were highly significant. As their interaction increases, the death rate decreases. In conclusion, a greater GSI at the start of the COVID-19 pandemic was associated with a decrease in the number of deaths over time in Latin American countries.
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American Journal of Tropical Medicine and Hygiene, v. 106, n. 5, p. 1486-1490, 2022.