# Public Health Made Easy

> Choose. Learn. Reflect. 


## Posts

- [SHOTS](https://learnpublichealth.in/shots/): Public Health Shots

## Pages

- [PHS 01](https://learnpublichealth.in/phs-01/): PHS 01 Why is Public Health Important? 7 reasons explained Clean water, vaccines, safe food, and disease surveillance. Public health quietly adds years to our lives. Here’s why it matters more than most people realise… Introduction When you drink a glass of tap water without falling ill, eat at a restaurant without worrying about food poisoning, or grow up without ever seeing a case of polio, you are experiencing public health at work. Most of us only notice healthcare when we are sick: the hospital, the doctor, the medicine. But much of the health we enjoy every day comes from work […]
- [Public Health Shots](https://learnpublichealth.in/read/): Public Health PHS - 01 Why is Public Health Important? 7 reasons explained Clean water, vaccines, safe food, and disease surveillance. Public health quietly adds years to our lives. Here’s why it matters more than most people realise.
- [Downloads](https://learnpublichealth.in/downloads/): Downloads
- [General vs Specific Objectives: How to Structure Them](https://learnpublichealth.in/research-methodology-general-specific-objectives/): General vs Specific Objectives: How to Structure Them Back Research Methodology Series · From Idea to Objective General vs Specific Objectives: How to Structure Them A dissertation doesn’t run on one objective — it runs on a general aim broken into specific, achievable pieces. Here’s how to split one correctly, and the mistakes that make specific objectives fall apart. Learn Public Health · Research Methodology Series · Module 2: From Idea to Objective Contents ▾ Contents 01Why split an objective at all 02The general objective 03The specific objectives 04How many is too many 05Common mistakes ·Before and after: fixing a bad […]
- [How to Write a Research Hypothesis](https://learnpublichealth.in/research-methodology-research-hypothesis/): How to Write a Research Hypothesis (Null vs Alternate) Back Research Methodology Series · From Idea to Objective How to Write a Research Hypothesis A hypothesis is the moment a research question turns into a prediction you can actually test — and prove wrong. Here’s how to write one properly, and when your study doesn’t need one at all. Learn Public Health · Research Methodology Series · Module 2: From Idea to Objective Contents ▾ Contents 01What a hypothesis is 02Null and alternate hypothesis 03Directional vs non-directional 04When you don’t need one 05What makes a hypothesis testable 06The link to Type […]
- [How to Frame a Strong Research Question](https://learnpublichealth.in/research-methodology-research-question/): How to Frame a Strong Research Question (FINER + PICOT) Back Research Methodology Series · From Idea to Objective How to Frame a Strong Research Question Every study starts with a question — but not every question is worth studying. Here’s how to shape a vague interest into a question that’s feasible, worth asking, and answerable with the resources you actually have. Learn Public Health · Research Methodology Series · Module 2: From Idea to Objective Contents ▾ Contents 01Where the question fits 02What makes a research question 03The FINER criteria 04Building a clinical question: PICOT ·Worked example 05Common mistakes 06From […]
- [Research Methodology](https://learnpublichealth.in/research-methodology/): Research Methodology — Learn Public Health Home / Learn / Research Methodology Back Core Science · 03 Research Methodology. “Research methodology is a way to systematically solve the research problem. It may be understood as the science of studying how research is done scientifically.” — C. R. Kothari, Research Methodology: Methods and Techniques. — Topics — Live now — Modules Learning path A–Z index Public Health Made Easy — learn the way that works for you.
- [How to Write Clear and Effective Research Objectives](https://learnpublichealth.in/research-methodology-research-objectives/): How to Write Clear and Effective Research Objectives (SMART + FORMAT) Back Research Methodology Series · From Idea to Objective How to Write Clear and Effective Research Objectives A research study is only as strong as the objectives that guide it. Here’s where objectives come from, what separates a strong one from a weak one, and exactly how to write one that holds up. Learn Public Health · Research Methodology Series · Module 2: From Idea to Objective Contents ▾ Contents 01Where it fits in the study 02The genesis of an objective ·Worked example: screen time & hypertension 03The SMART criteria […]
- [Learn Subjects](https://learnpublichealth.in/learn-subjects/): Browse by subject Every topic in the public health curriculum — from the epidemiology of a single outbreak to the policy that shapes a nation’s health. All subjects Core sciences Clinical & community Systems & policy Environment & safety 📈 Epidemiology Study design, measures of association, outbreak investigation, bias and confounding. 📊 Biostatistics Sampling, probability, hypothesis testing, regression and interpreting p-values. 🔬 Research methodology Framing questions, protocols, sampling, data collection, ethics and critical appraisal. 👥 Demography Census, vital statistics, population pyramids, fertility and mortality indicators. 🛡️ Preventive & social medicine The classic PSM syllabus — levels of prevention, natural history of […]
- [Learn](https://learnpublichealth.in/learn-land/): Learn public health your way Everyone learns differently — some watch, some play, some listen on the go. So we built it all. Pick the format that fits how your brain works today. 🎬 Browse by content type Videos, games, podcasts, notes, infographics or quizzes. 📚 Browse by subject Epidemiology, biostatistics, PSM, policy and many more. Or search for a topic Search No results yet. Request this topic
- [Terms of Services](https://learnpublichealth.in/terms-services/): Terms of Service — Public Health Made Easy
- [Register](https://learnpublichealth.in/register/): Back
- [Learn/Infographics](https://learnpublichealth.in/learn-infographics/): Back
- [Epidemiology](https://learnpublichealth.in/epidemiology/): Epidemiology — Learn Public Health Home / Learn / Epidemiology Back Core Science · 01 Epidemiology. “The study of the distribution and determinants of health-related states or events in specified populations, and the application of this study to the control of health problems.” — John M. Last, A Dictionary of Epidemiology. The definition adopted by the WHO. — Topics — Live now — Modules Learning path A–Z index Public Health Made Easy — learn the way that works for you.
- [Epidemiology/Confounding](https://learnpublichealth.in/epidemiology-confounding/): What Is Confounding in Research? A Plain-English Guide with Examples Back Epidemiology Series · Bias & Confounding What Is Confounding in Research? A third factor tied to both the exposure and the outcome can manufacture a false link — or hide a true one. Learning to spot it is the difference between reading a study and understanding it. Learn Public Health · Epidemiology Series · Module 5: Bias, Confounding & Error Contents ▾ Contents 01What is a confounder? 02Mediators, effect modifiers & colliders 03How to adjust for confounding ·Design stage ·Analysis stage 04Conclusion 05References The coffee that looked guilty The result […]
- [Disclaimer](https://learnpublichealth.in/disclaimer/): Back Disclaimer Educational content — not medical advice. Important information about how to use the content on this site, its limits, and when to consult a professional. Last updated: 7 July 2026 Educational purpose only All content on Public Health Made Easy — including articles, videos, notes, quizzes, images, and downloadable resources — is provided for general educational and informational purposes only. It is intended to support learning about public health, epidemiology, and related sciences. Not medical advice The content on this site is not a substitute for professional medical advice, diagnosis, or treatment. Nothing here should be interpreted as personal […]
- [About](https://learnpublichealth.in/about/): Back About Public health, made genuinely easy to understand. A free learning resource built by a community medicine graduate to make epidemiology, biostatistics, and preventive medicine clear and accurate. Public Health Made Easy is a free educational resource dedicated to making public health, epidemiology, biostatistics, preventive medicine, and evidence-based health science clear, accurate, and genuinely useful — whether you are a student preparing for exams, an early-career professional, or simply someone who wants to understand how public health works. Our goal is simple: to be one of the most trusted, accurate, and easy-to-understand public health learning resources on the internet. Who […]
- [Contact Us](https://learnpublichealth.in/contact/): Back Contact We’d love to hear from you. Questions, feedback, corrections, or a topic you want covered — reach out any time. What you can write to us about Questions about topics covered on the site Suggestions for new articles, videos, or study resources Corrections or clarifications — we take accuracy seriously and appreciate being told if something needs updating Collaboration or general enquiries Privacy-related requests (see our Privacy Policy) A note on medical questions We are not able to provide personal medical advice, diagnoses, second opinions, or guidance about individual health conditions or treatment. Content on this site is educational […]
- [History/John Snow/Summary](https://learnpublichealth.in/history-john-snow-summary/): John Snow — In Brief Back to full story The Short Version John Snow, in Brief How a quiet Victorian doctor proved that cholera spread through contaminated water — years before anyone could see the bacterium responsible — and, in doing so, founded modern epidemiology. About a 2-minute read John Snow (1813–1858) — the quiet anesthetist who traced cholera to a single water pump. * The story in six points 1 Victorian London was poisoning itself.The same River Thames that carried away the city’s sewage also supplied its drinking water — unfiltered and unsuspected. 2 Everyone blamed bad air.The dominant Miasma […]
- [History/John Snow](https://learnpublichealth.in/history-john-snow/): John Snow and the Invisible Killer Back John Snow and the Invisible Killer: How One Doctor Traced a Disease No One Could See Long before anyone had seen a bacterium under a microscope, one quiet doctor proved that an invisible killer was hiding in plain sight. Collated by: Sujith Surendran · On: July 05, 2026 Short on time? We’ve got you covered — click here to get a crisp & short summary on the story of John Snow. Summary In this story Sections · tap to jump Jump to a section Browse ▾ 01A Story Everyone Gets Wrong 02The Dirtiest Great […]
- [Learn/Games/Tests of Significance Game](https://learnpublichealth.in/tests-of-significance-game/): Back
- [Learn/Games](https://learnpublichealth.in/games/): Games — Public Health Made Easy Back Learn public health by playing. Quick, hands-on games that make concepts stick — grouped by subject. Start with the ones marked Play; more arrive regularly. All Statistics Epidemiology Communicable Diseases Nutrition Health Systems History Statistics Biostatistics & study design Play Matching game Pick the Right Test Match each study scenario to the correct test of significance — t-test, chi-square, ANOVA and more Play now → Play Sort game Normal or Skewed? Look at each distribution and decide whether to use a parametric or non-parametric test Play now → Play Quiz game Read the p-value […]
- [Learn Content](https://learnpublichealth.in/learn/): Browse by content type Watch, play, listen, read, glance or test yourself — the same public health syllabus, delivered six different ways. 🎬 Videos Short, visual explainers on core concepts and field practice. 🎮 Games Learn by doing — scenarios, simulations and decision challenges. 🎧 Audio podcasts Learn on the move — commute, clinic breaks, field visits. Coming soon 📝 Lecture notes Clear, structured notes you can revise and download. 📊 Infographics Complex data made simple — shareable, at-a-glance visuals. ✅ Quizzes Check what stuck — quick self-assessments with instant feedback. Coming soon Rather go topic by topic? Browse by subject
- [History](https://learnpublichealth.in/public-health-stories/): Milestones in Public Health The people, discoveries and events that shaped public health — from 400 BC to the new age of global pandemics. Before 1800 Foundations ~400 BCE Hippocrates Father of medicine; linked disease to environment, not superstition 1300s Quarantine Origins Venice’s 40-day ship isolation gave us the word “quarantine” 1700 Bernardino Ramazzini Father of occupational medicine; studied diseases caused by work 1747 James Lind Ran the first clinical trial, proving citrus cured scurvy 1796 Edward Jenner Developed the first vaccine, against smallpox 1800 – 1950 Sanitation & Germ Theory 1854 John Snow Traced cholera to the Broad Street pump, […]
- [Homepage](https://learnpublichealth.in/): Public health, explained with clarity and care The history of public health, its core concepts, and the practical tools researchers actually use — for students, professionals, and the curious. Watch on YouTube History of Public Health Learn Watch & learn Bite-sized public health, explained on video. Complete guide to data analysis using Jamovi Free, open-source data analysis explained in 30 minutes. Mission LiFE Lifestyle for Environment — small acts, big impact. Edward Jenner The story behind the world’s first vaccine. What we cover Four ways to explore public health. 📖 Public health history The people and events behind the breakthroughs — […]
- [Privacy Policy](https://learnpublichealth.in/privacy-policy/): Back Privacy Policy How we handle your data, cookies, and advertising. Details on the information this site collects, how advertising cookies work, and the choices you have. Effective date: 7 July 2026 This Privacy Policy explains how Public Health Made Easy (“we,” “us,” or “our”), accessible at learnpublichealth.in, collects, uses, and protects information when you visit our website. By using this site, you agree to the practices described below. 1. Who we are Public Health Made Easy is an educational website about public health and related topics, operated by Dr. Sujith Surendran. If you have any questions about this policy, contact […]

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