Dead Man Talking

Share this post

Sources of bias in observational studies of covid-19 vaccine effectiveness

metatron.substack.com

Discover more from Dead Man Talking

Dead people don't lie. Empirical analysis of mortality and other data to eke out the truth about COVID, vaccines and public health interventions in general.
Over 25,000 subscribers
Continue reading
Sign in

Sources of bias in observational studies of covid-19 vaccine effectiveness

In other words, 90%+ COVID "vaccine" efficacy claims are all bogus.

Joel Smalley
Mar 29, 2023
110
Share this post

Sources of bias in observational studies of covid-19 vaccine effectiveness

metatron.substack.com
30
Share

Discussion of multiple factors that can bias estimates of covid-19 vaccine effectiveness, such as:

  1. vaccination status misclassification;

  2. testing differences; and

  3. disease risk factor confounding.

Our article complements these observations by providing examples based on actual data sets that quantify how case-counting window bias, age bias, and background infection rate bias can profoundly complicate the analysis of observational studies, shifting covid-19 vaccine effectiveness estimates by an absolute magnitude as high as 50% to 70%.

Daily covid-19 cases and vaccination rates—United States, UK, and Israel, 2021. Israel: At 20% “fully vaccinated,” daily case rate remained high (timepoint A). At 50%, daily case rate dropped to a seasonal low (timepoint B). UK and United States: Daily case rates dropped drastically with few “fully vaccinated” (timepoint A). At 20% and 5% “fully vaccinated,” daily case rates approached seasonal lows (timepoint B). Data source: OurWorldInData.

Sources of bias in observational studies of covid-19 vaccine effectiveness

Kaiser Fung MPhil, MBA, Mark Jones PhD, Peter Doshi PhD

First published: 26 March 2023

110
Share this post

Sources of bias in observational studies of covid-19 vaccine effectiveness

metatron.substack.com
30
Share
30 Comments
Share this discussion

Sources of bias in observational studies of covid-19 vaccine effectiveness

metatron.substack.com
Patricia
Mar 29Liked by Joel Smalley

I think most of what we thought we knew about vaccines is bogus. Very interesting to read the history of vaccines and how they were supposedly miracle cures for polio, measles et al. Most of what we grew up 'knowing' was likely false and it was ever the same story - the ordinary people knew the vaccines didn't work and caused serious harms but the establishment and doctors refused to listen.

Expand full comment
Reply
Share
5 replies
Alan Richards
Mar 29Liked by Joel Smalley

The data is so dirty, you have to ask is it worth spending time trying to clean it up. Deaths, cause of death, cases, vaccination status are all deliberately muddied. Along comes the pandemic and a few honest data scientists like yourself try to make sense of it all, not knowing that Big Pharma has been practicing this deceit for years.

Expand full comment
Reply
Share
3 replies by Joel Smalley and others
28 more comments...
Top
New
Community

No posts

Ready for more?

© 2023 Metatron
Privacy ∙ Terms ∙ Collection notice
Start WritingGet the app
Substack is the home for great writing