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  1. Jul 16, 2020 · In response to Question 9, 24 percent of respondents self-reported that wearing a mask made them less likely to follow social-distancing guidelines. This finding raises the possibility that, at least for some individuals, they may see a tradeoff between two of the recommended measures to reduce the transmission of the coronavirus.

    • Edward S. Knotek, Raphael S. Schoenle, Alexander M. Dietrich, Gernot J. Müller, Kristian Ove R. Myrs...
    • 2020
  2. Jun 16, 2021 · Thus, early implementation of the state-level public masking mandate was associated with a 9% relative reduction in the relative growth of COVID-19 cases after 2 months. Table 2. - For the Target Date of 1 September 2020, Point Estimates (95% CI) for the Expected Outcome Under Early Implementation E E ( Y | A = 1, W)

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    Do government mask mandates increase mask wearing?

    How likely are Americans to wear masks?

    What do dashed lines in the November mask mandate represent?

    Are mask mandates in Kansas effective?

    • Introduction
    • Mask Usage in Kansas
    • The CDC Study of Kansas Mask Mandates
    • Extension of Dates to Include Fall Surge
    • Additional Issues with The CDC Study
    • Discussion and Limitations
    • Conclusion
    • Appendix 1: A Note on Population-Adjusted Case Values
    • Appendix 2: Hierarchical Bayesian Model

    Public health officials here and throughout most of the world agree that mask wearing has some value in reducing the rate at which COVID-19 spreads. As a result, numerous states and localities, including the State of Kansas, have issued requirements mandating the use of face masks. Although controlled studies of mask mandates are rare due to the na...

    At the request of The New York Times, the firm Dynasta conducted a survey between July 2 and July 14, 2020, to assess the level at which people were wearing masks across the country. The firm garnered 250,000 responses, compiling county-by-county data that was presented visually on The New York Times website and posted on Github.com.7“Estimates fro...

    The Centers for Disease Control and Prevention (CDC) released a November research paper that studies the efficacy of mask mandates in the state of Kansas.11Van Dyke et al., “Trends in County-Level COVID-19 Incidence in Counties With and Without a Mask Mandate.” The CDC paper examines, at the county level, the number of new daily COVID-19 cases repo...

    The CDC paper does not report any statistics beyond August. In a footnote on page 1777, the CDC report states: Although school reopening is an important change in events, it does not prohibit investigating COVID-19 trends in Kansas after August. Moreover, the Kansas governor signed a separate executive order in July “mandating all students, teacher...

    Several other aspects of the CDC study’s methodology deserve further examination. The first of these issues is the method used to calculate incidence. Typically, to adjust case totals for population differences, researchers convert raw values to the number of cases per 100,000 population. For a given geographic area, they calculate this measure by ...

    Initially after the mandate, on a per-capita basis, counties with mask mandates had more cases (based on seven-day rolling daily averages) than those without mandates. However, in the fall, non-mandated counties reported higher case incidence. In terms of mortality, levels fluctuated in both groups of counties, with non-mandated counties having mor...

    Rigorous statistical analysis is fundamentally important in assessing public policy. Our analysis indicates that, after the imposition of an optional mandate, trends in COVID-19 proliferation continued to increase in Kansas counties with andwithout mandates. The CDC report on the Kansas mask mandates fails to analyze the data with a sufficient leve...

    Throughout the COVID-19 pandemic, various agencies and news outlets have relied on both raw numbers of reported cases as well as population-adjusted figures. Typically, population-adjusted figures allow better comparisons across countries, states, or counties with different population sizes. Sometimes, the raw values and the adjusted figures can pr...

    In our model, we specified for month i=1,…I, day t=1,...,ti, and j=1 to represent the set of counties that implemented the mask mandate, and 2 for the set that did not. We defined the log daily growth rate in incidence log(yijt)~N(μijt,σijt2), with the following linear predictor: μijt=αijt+βijt and the following prior structure: αijt∼N(μα,σα2) βijt...

  4. May 12, 2022 · A new study has blown the debate wide open: It shows that masks are not only worthless against Covid-19, wearing them might potentially be harmful for people’s physical and mental health and for society in general. A peer-reviewed journal article in Cureus called the “Correlation Between Mask Compliance and COVID-19 Outcomes in Europe ...

  5. May 31, 2022 · Our estimates imply that the mean observed level of mask wearing corresponds to a 19% decrease in the reproduction number R. We also assess the robustness of our results in 60 tests spanning 20 sensitivity analyses. In light of these results, policy makers can effectively reduce transmission by intervening to increase mask wearing.

  6. Nov 15, 2021 · in this multi-national sample of over 13 million adults from 38 countries, we found considerable heterogeneity in mask use across countries throughout the covid-19 pandemic, and some cross-country differences were statistically significant even after adjusting for individual- and country-level factors, such as time-varying mask-wearing policy …

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