Prediction of end of lockdown post-peak of cases in first wave of the COVID-19 pandemic in Chile

Medwave

卷:20

Patricia Díaz-Calzadilla¹  Pablo San Martín-Roldán²  David San Martín-Roldán³  Francisca Rojo-Lazo³  Aracelis Calzadilla-Núñez⁴  Víctor P Díaz-Narváez⁵ 

[1] Facultad de Ciencias de la Salud, Universidad Autónoma de Chile, Santiago, Chile;

[2] Escuela de Nutrición y Dietética, Facultad de Ciencias, Universidad Mayor, Santiago, Chile;

[3] Escuela de Obstetricia y Puericultura, Facultad de Medicina, Universidad de Valparaíso, Valparaíso, Chile;

[4] Facultad de Odontología, Universidad Andres Bello, Santiago, Chile;

关键词: covid-19;    coronavirus;    2019-ncov;    sars-cov2;    2019 novel coronavirus;    forecasting;    quarantine;   

DOI  :  10.5867/medwave.2020.10.8057

来源: DOAJ

【 摘 要 】

IntroductionThe 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.ObjectiveWe discuss the best conditions and guarantees for the end of compulsory confinement.MethodsThis 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.OutcomesIt 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.ConclusionsGradual 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.

【 授权许可】

Unknown