San Martín-Roldán D, Rojo-Lazo F, Calzadilla-Núñez A, San Martín-Roldán P, Díaz-Calzadilla P, Díaz-Narváez VP. [Prediction of end of lockdown post-peak of cases in first wave of the COVID-19 pandemic in Chile].
Medwave 2020;
20:e8057. [PMID:
33231573 DOI:
10.5867/medwave.2020.10.8057]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Accepted: 10/20/2020] [Indexed: 11/27/2022] Open
Abstract
Introduction
The results of mandatory confinement have been detrimental in several respects. Nonetheless, they have resulted in reducing the number of active cases of COVID-19. Chile has begun the de-escalation and needs to know the best time to end the restrictions.
Objective
We discuss the best conditions and guarantees for the end of compulsory confinement.
Methods
This study is based on a trend model with prediction estimation. The data of the variables of interest were subjected to linear regression studies to determine the curve that best explained the data. The coefficient of determination, the standard deviation of y in x, and the confidence interval of the observed curve were estimated. The trend curve was chosen in accordance with the regression estimates.
Outcomes
It was found that all dependent variables tended to decrease over time in a quadratic fashion, except for the new cases variable. In general, the R2 and MAPE estimates are satisfactory, except for the variable number of PCR tests per day.
Conclusions
Gradual and cautious steps should be taken before ending mandatory confinement. In the current de-escalator, daily PCR tests should be increased, maintaining vigilance on indicators of incidence, prevalence, and positivity of PCR tests. Evidence suggests with some degree of confidence that mandatory confinement could be safely lifted as of August 30, 2020. Long-term preparations must be made to contain future waves of new cases.
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