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Public health, clearly explained

Broadly Epi helps people stay current on public-health news, understand the ideas behind the headlines, and build practical skills for public-health work. Our reporting, explainers, and tutorials leave sensationalism behind and make room for clear, usable understanding.

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Ships with white sails on the Seine at Rouen, painted by Claude Monet.

Epidemiologic Calculations

How to calculate an odds ratio in Python

Build a 2x2 contingency table in Python, calculate an odds ratio and 95% confidence interval by hand, and confirm the result with scipy.stats.fisher_exact. Uses a self-contained fictional case-control study with no external files required.

September 7, 2026 · Python

An arch-shaped painting depicting a serene medieval scene with monks working indoors. On the left, a monk is seated and focused on writing at a slanted desk, while on the right, two monks are collaborating at a table. The room is softly lit, highlighting the contemplative atmosphere, with arched windows and a simple interior. Ornate mosaic patterns decorate the arch's frame.

Data Import & Management

Text data types for NLP in Python

Work through Python examples of strings, lists, dictionaries, DataFrames, tokens, sparse matrices and embeddings.

December 13, 2024 · Python

Study Center

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The artwork titled "Adam and Eve Tavern, Old Chelsea" by James Abbott McNeill Whistler depicts a serene riverside scene. In the foreground, several boats with sails are moored along the water’s edge, suggesting a bustling yet tranquil atmosphere. The boat on the left is smaller, while a larger vessel is positioned on the right, both rendered with intricate line work that conveys texture and detail. The background features a row of historical buildings, characterized by their distinct rooftops and windows, creating a sense of architectural charm. The Adam and Eve Tavern stands prominently among the structures, identifiable by its signage, which hints at the establishment's name. The buildings are sketched in fine lines, emphasizing their age and character, with a mix of gabled roofs and chimneys. A castle-like structure can be seen atop a hill in the distance, adding depth to the composition. The sky is lightly shaded, suggesting a soft light that enhances the overall mood of the scene. The etching technique gives the artwork a delicate quality, with careful attention to light and shadow that highlights the reflections in the water, adding a sense of movement and fluidity. Overall, the piece captures a moment in time at this historical location, blending architecture and nature harmoniously.

Data, Analytics & Informatics

Methods to reduce bias

Compare methods to reduce bias across recruitment, assignment, measurement, analysis and reporting, with worked standardization examples and CPH practice questions.

January 27, 2026 · 12 minutes

An abstract painting with loose, expressive brushstrokes in deep blues, teal, pale green, ochre, and soft pink. The composition suggests organic, flowing forms without clear figures, with layered paint, drips, and textured marks creating a sense of movement and emotional intensity.

Communication

Audience analysis and segmentation

CPH exam review: identify audience needs and barriers and use segmentation to guide a communication approach.

January 20, 2026 · 9 minutes