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COVID Data Follies: Vaccination Rates, Relative Risk, and Simpson's Paradox

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COVID Data Follies: Vaccination Rates, Relative Risk, and Simpson's Paradox

A talk I gave to the Actuarial Science program at Illinois State University

Mary Pat Campbell
Dec 9, 2021
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COVID Data Follies: Vaccination Rates, Relative Risk, and Simpson's Paradox

marypatcampbell.substack.com

On Monday, December 6, 2021, I gave a talk with the title “COVID Data Follies: Vaccination Rates, Relative Risk, and Simpson's Paradox”, to the Actuarial Science program at Illinois State University (thanks for the t-shirt, y’all!):

You may have heard statistics in the news that most of the people testing positive for COVID, currently, in a particular location, or most of the people hospitalized for COVID, or even most of the people dying of COVID were vaccinated! How can that be? Does that prove that the vaccines are ineffective? Using real-world data, the speaker, Mary Pat Campbell, will show how these statistics can both be true and misleading. Simpson's Paradox is involved, which has to do with comparing differences between subgroups with very different sizes and average results. Simpson's Paradox actually appears quite often in the insurance world.

I will embed a recording of the event, copies of the slides, the spreadsheets, and the links from the talk.

Recording of the talk

Slides and files

Here are the slides in PDF form:

Covid Data Follies V1
1.5MB ∙ PDF File
Download
Download

Substack doesn’t support embedding Powerpoint, so if you want a copy of the Powerpoint slides, you can get them from my Dropbox from this link: PowerPoint copy.

The spreadsheet with data and graphs:

Israeli Vaccination And Severe Cases August 2021 V2
57.9KB ∙ XLSX File
Download
Download

Resource links

Jeffrey Morris provided a lot of the resources:

  • Morris, Jeffrey. “Israeli data: How can efficacy vs. severe disease be strong when 60% of hospitalized are vaccinated?”. https://www.covid-datascience.com/post/israeli-data-how-can-efficacy-vs-severe-disease-be-strong-when-60-of-hospitalized-are-vaccinated.

  • Twitter thread:

    Twitter avatar for @jsm2334
    Prof Jeffrey S Morris @jsm2334
    Is watching the 1984 Ghostbusters movie killing people? Recent data show death rate of 10-59yr olds who have watched the 1984 Ghostbuster Movie is 2x higher than those who have watched the 2021 Ghostbuster movie I don't know how to explain this other than movie-caused mortality
    Image
    7:46 PM ∙ Nov 23, 2021
    5,988Likes1,642Retweets

McDonald, Stuart. “Simpson’s Paradox and Vaccines”. https://covidactuaries.org/2021/11/22/simpsons-paradox-and-vaccines/.

Bermingham, Charlotte. “Coronavirus Deaths: Understanding ONS data on mortality and vaccination status”. https://blog.ons.gov.uk/2021/11/19/coronavirus-deaths-understanding-ons-data-on-mortality-and-vaccination-status/.

Copeland, Tim. “What is Simpson’s Paradox?”. https://towardsdatascience.com/what-is-simpsons-paradox-4a53cd4e9ee2.

Some of this talk drew from two of my substack posts:

STUMP - Meep on public finance, pensions, mortality and more
COVID and Simpson's Paradox: Why So Many Vaccinated People are Among the Current Wave of Hospitalizations
That’s some paradox, that Simpson’s Paradox. (and it comes up all the time in real life) With the notice that the fully-vaccinated Texas governor has tested positive for COVID, I thought I’d do my own post on why we see so many fully-vaccinated people test positive for COVID…
Read more
2 years ago · 2 likes · Mary Pat Campbell
STUMP - Meep on public finance, pensions, mortality and more
Covid, Ghostbusters, and Fraudulent Data
First, something from the UK…
Read more
a year ago · Mary Pat Campbell

More Mary Pat Campbell Links

Substack: (yes, you’re here, but hey)

STUMP - Meep on public finance, pensions, mortality and more

Public finance, pensions, mortality trends from the perspective of Meep (Mary Pat Campbell), a life-annuity actuary. Less frequent topics: data visualization, actuarial politics, literature, opera, and sumo.
By Mary Pat Campbell

LinkedIn: https://www.linkedin.com/in/marypatcampbell/

Twitter: https://twitter.com/meepbobeep

YouTube: https://www.youtube.com/user/meepsmathmatters

goActuary Discussion Board: https://community.goactuary.com/

I am active on goActuary — I have no official association, but I am familiar with the founders and, given the extremely small nature of the North American actuarial sphere, I know a lot of the people on the board.

Actuarial News: https://www.actuarial.news/

I own the Actuarial News website, and use it as an aggregation site for my own purposes. I’m “curating” links, not that I agree with the content, but I find it significant in some way. I used to use the old Actuarial Outpost website for the purpose, but that site died in 2020 for non-COVID-related reasons. I think.

Thanks for reading — feel free to contact me if you have any questions — marypat.campbell@gmail.com

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COVID Data Follies: Vaccination Rates, Relative Risk, and Simpson's Paradox

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