Reletter
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Public Health Night School

René F. Najera

Hi, glad you're here! Read an engaging series of lessons designed to demystify public health science. Learn how diseases spread, what drives health trends, and how data saves lives—all in a fun, accessible way. Perfect for curious minds, no PhD required!

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Substack
PricingFreemiumPublishesDaily
Issues238Foundeda year agoLast Issue4 days ago
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Latest Issues

Biostatistics: When Is a Difference Really a Difference?

How hypothesis testing and p-values help us think about random noise, and why statistical significance is not the same as real-world importance.

This is the fourth part of the 5-part series on biostatistics. Part 1 is here. Part 2 is here....

4 days ago
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Biostatistics: The Sample Is Not the Soup

How sampling, uncertainty, confidence intervals, and margin of error help us estimate what is happening in a larger population

This is part 3 of a 5-part series on biostatistics. You can read part 1 here and part 2 here.

6 days ago
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The Outbreak Iceberg: Why the Official Case Count Is Just the Tip

Epidemiologic Curve of measles outbreak in South Africa. (Source: Ntshoe, G. M., McAnerney, J. M., Archer, B. N., Smit, S. B., Harris, B. N., Tempia, S., Mashele, M., Singh, B., Thomas, J., Cengimbo, A., Blumberg, L. H., Puren, A., Moyes, J...

7 days ago

Biostatistics: Averages Can Lie, But They Usually Mean Well

How descriptive statistics summarize messy data, and why mean, median, and spread each tell a different part of the story.

This is part 2 of the 5-part series on biostatistics for the Public Health Night School. You can read part 1 here.

8 days ago
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The Picnic Outbreak: A Beginner's Guide to Biostatistics

Five posts, one stomach-turning mystery, and all the numbers you need to solve it

It’s that time of the year again when we go over biostatistics for those of you who are not familiar with biostatistics. (Or if you are familiar but need a r...

11 days ago
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  • René F. Najera

    Exploring the intersection of science, society, and storytelling. As a public health leader, infectious disease expert, and social epidemiologist, I share insights on vaccines, disease prevention, and the social determinants of health.

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