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Effect of Social Distancing on COVID-19 Incidence and Mortality in Iran Since February 20 to May 13, 2020: An Interrupted Time Series Analysis

Authors Alimohamadi Y, Holakouie-Naieni K, Sepandi M, Taghdir M

Received 8 June 2020

Accepted for publication 29 August 2020

Published 23 September 2020 Volume 2020:13 Pages 1695—1700

DOI https://doi.org/10.2147/RMHP.S265079

Checked for plagiarism Yes

Review by Single anonymous peer review

Peer reviewer comments 4

Editor who approved publication: Professor Marco Carotenuto


Yousef Alimohamadi,1,2 Kourosh Holakouie-Naieni,2 Mojtaba Sepandi,3,4 Maryam Taghdir3

1Pars Advanced and Minimally Invasive Medical Manners Research Center, Pars Hospital, Iran University of Medical Sciences, Tehran, Iran; 2Department of Epidemiology & Biostatistics, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran; 3Health Research Center, Lifestyle Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran; 4Department of Epidemiology & Biostatistics, Faculty of Health, Baqiyatallah University of Medical Sciences, Tehran, Iran

Correspondence: Mojtaba Sepandi
Health Research Center, Lifestyle Institute, Baqiyatallah University of Medical Sciences, Nosrati Alley, South Sheykhbahaee Ave, Tehran 143591-13189, Iran
Tel +982187555521
Email [email protected]

Background and Objective: Numerous actions have been taken to control the COVID-19 pandemic and reduce their morbidity and mortality. One of the most important measures in this regard is social distancing. However, there is limited evidence on the effectiveness of social distancing on COVID-19 incidence and mortality. Thus, the current study aimed to assess the effectiveness of social distancing measures on the COVID-19 incidence and mortality in Iran.
Materials and Methods: In the current quasi-experimental study, we evaluated the daily incidence cases and the number of deaths of COVID-19 in Iran before and after the implementation of social distancing measures. The segmented regression model was used to analyze the data. We also performed the interrupted time series (ITS) analysis using Newey ordinary least squares (OLS) regression-based methods.
Results: After the implementation of social distancing, the trend of both daily new cases and deaths due to COVID-19 was decreasing [(ß = − 1.70 (95% CI = [− 2.30 – − 1.10; P < 0.001])) and (ß = − 0.07 (95% CI = [− 0.10 − − 0.05; P < 0.001], respectively))].
Conclusion: Social distancing along with other public health interventions could reduce the morbidity and mortality of COVID-19 to some degrees, and it seems to be crucial to control the pandemic.

Keywords: COVID-19, social distancing, Iran, mortality, incidence

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