scholarly journals Absence of evidence or methodological issues? Commentary on “Stay-at-home policy is a case of exception fallacy: an internet-based ecological study”

2021 ◽  
Author(s):  
Gideon Meyerowitz-Katz ◽  
Lonni Besançon ◽  
Raphael Wimmer ◽  
Antoine Flahault

We read with interest the paper written by Savaris et al. entitled “Stay-at-home policy is a case of exceptional fallacy: an internet-based ecological study”[1]. We believe that the topic of whether non-pharmaceutical interventions (NPIs) have an impact on COVID-19 mortality is a key metric that is important to measure, and applaud the authors for attempting to do so. However, we believe that several key deficiencies within the methodology make the conclusions – that the authors found no evidence that COVID-19 deaths were reduced by staying at home – largely meaningless. In this letter we explain the deficiencies in the analysis, and why the methodology may be inadequate to detect an effect even if it were to exist.

2021 ◽  
Author(s):  
Carlos Góes

Savaris et al. (2021) aim at "verifying if staying at home had an impact on mortality rates." This short note shows that the methodology they have applied in their paper does not allow them to do so. An estimated coefficient β≈0 does not imply that there is no association between the variables in either country. Rather, their pairwise difference regressions are computing coefficients that are weighted-averages of region-specific time series regressions, such that it is possible that the association is significant in both regions but their weighted-averages is close to zero. Therefore, the results do not back up the conclusions of the paper.


2020 ◽  
Author(s):  
Ricardo F. Savaris ◽  
Guilherme Pumi ◽  
Jovani Dalzochio ◽  
Rafael Kunst

AbstractBackgroundCountries with strict lockdown had a spike on the number of deaths. A recent mathematical model has suggested that staying at home did not play a dominant role in reducing COVID-19 transmission. Comparison between number of deaths and social mobility is difficult due to the non-stationary nature of the COVID-19 data.ObjectiveTo propose a novel approach to assess the association between staying at home values and the reduction/increase in the number of deaths due to COVID-19 in several regions around the world.MethodsIn this ecological study, data from www.google.com/covid19/mobility/, ourworldindata.org and covid.saude.gov.br were combined. Countries with >100 deaths and with a Healthcare Access and Quality Index of ≥67 were included. Data were preprocessed and analyzed using the difference between number of deaths/million between 2 regions and the difference between the percentage of staying at home. Analysis was performed using linear regression and residual analysisResultsAfter preprocessing the data, 87 regions around the world were included, yielding 3,741 pairwise comparisons for linear regression analysis. Only 63 (1.6%) comparisons were significant.DiscussionWith our results, we were not able to explain if COVID-19 mortality is reduced by staying as home in ∼98% of the comparisons after epidemiological weeks 9 to 34.


2021 ◽  
Vol 11 (1) ◽  
Author(s):  
R. F. Savaris ◽  
G. Pumi ◽  
J. Dalzochio ◽  
R. Kunst

AbstractA recent mathematical model has suggested that staying at home did not play a dominant role in reducing COVID-19 transmission. The second wave of cases in Europe, in regions that were considered as COVID-19 controlled, may raise some concerns. Our objective was to assess the association between staying at home (%) and the reduction/increase in the number of deaths due to COVID-19 in several regions in the world. In this ecological study, data from www.google.com/covid19/mobility/, ourworldindata.org and covid.saude.gov.br were combined. Countries with > 100 deaths and with a Healthcare Access and Quality Index of ≥ 67 were included. Data were preprocessed and analyzed using the difference between number of deaths/million between 2 regions and the difference between the percentage of staying at home. The analysis was performed using linear regression with special attention to residual analysis. After preprocessing the data, 87 regions around the world were included, yielding 3741 pairwise comparisons for linear regression analysis. Only 63 (1.6%) comparisons were significant. With our results, we were not able to explain if COVID-19 mortality is reduced by staying at home in ~ 98% of the comparisons after epidemiological weeks 9 to 34.


2016 ◽  
Author(s):  
Rita Sanders
Keyword(s):  

2021 ◽  
pp. 1-7
Author(s):  
Ella Nicholls ◽  
Trudy Sullivan ◽  
Jiaxu Zeng ◽  
Adam C. Pomerleau

2021 ◽  
Vol 42 (Supplement_1) ◽  
pp. S142-S142
Author(s):  
Theresa L Chin ◽  
Rita Frerk ◽  
Victor C Joe ◽  
Sara Sabeti ◽  
Kimberly Burton ◽  
...  

Abstract Introduction The COVID19 pandemic has led to anxiety and fears for the general public. People were concerned about coming to a medical facility where the virus might be transmitted. Furthermore, stay-at-home orders that were implemented during the pandemic did not apply to clinic visits but contributed to people staying at home even for medical care. We hypothesized that there were delays in burn care due to the pandemic. Methods We queried our clinic data for number of clinic visits and new burn evaluations by month. Patients referred to our clinic from March 15, 2020 to Sept 15, 2020 were reviewed for time of presentation after injury. Days from injury date to clinic referral date and days from clinic referral date to appointment date were calculated. Patients who were referred but did not show and were not seen in our ED were not included because injury date could not be determined. Univariate analysis was performed. Results As seen in Figure 1, our in-person clinic volume decreased in April and May 2020 but rebounded in June 2020 as compared to the number of clinic visits for the same months last year. Similarly, in Figure 2, our new burn evaluations decreased in April and May 2020 compared to our new burn volume from 2019. However, our video telehealth visits increased in March and April then decreased in June-August. Conclusions Our burn clinic remained open to see patients with burn injury throughout the pandemic, however, clinic visits were delayed early in the pandemic. While we had an increase in video telehealth, it does not account for the decrease in clinic visits. This may be due to low enrollment in the electronic medical record encrypted communication platform and/or limited knowledge/access to the technology. Additional care may have been informally given via telephone but not well captured. Furthermore, burn care was delivered in the following months. Additional investigation is necessary to see if the incidence of burn injury decreased.


2021 ◽  
Vol 3 (1) ◽  
pp. 25-31
Author(s):  
Ade Suherman ◽  
Tetep Tetep ◽  
Asep Supriyatna ◽  
Eldi Mulyana ◽  
Triani Widyanti ◽  
...  

The purpose of this study is to analyze and explain public perceptions of the implementation of social distancing during the pandemic as the implementation of social capital. This study was motivated by the phenomenon of the outbreak of the Covid-19 pandemic in a number of countries, including Indonesia. This condition not only affects the economic condition of a country, hinders social interaction among the community, and also has an impact on the health condition of every human being. To avoid the wider spread of Covid-19, the government was forced to adopt social distancing and physical distancing policies in the form of staying at home, working from home, studying, and worshiping at home. This research approach is descriptive qualitative. The data of this research is the impact of social distancing for the community in Tarogong Kidul District, Garut Regency. Sources of data come from several communities with a total of 50 respondents. Collecting data in this study using interview techniques, record, and continue to take notes. The results of the research can be concluded that with the implementation of social distancing in the pandemic period, at least the community can implement social capital which includes informal values ​​or norms that are shared among members of an interrelated community group, which is based on the values ​​of beliefs, norms and networks social and they respect each other, the development of social capital is the creation of increasingly independent groups of people who are able to participate more meaningfully. Social capital can solve citizens' problems, especially with regard to strengthening friendship, repairing and maintaining public service facilities because it has advantages and is the most appropriate, even though there are other social capital in the community.


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