What's your p-value?

Ronald Fisher and Some Thoughts on the p-Value

One of the most discussed, debated and controversial issues in medical research is the p-value. I came across Ronald Fisher’s take on this matter in his work, Statistical Methods for the Research Worker, 1925 (the text of this work has been made available online by Christopher D. Green of the York University): “The value for which P=0.05, or 1 in 20, is 1.96 or nearly … Continue reading Ronald Fisher and Some Thoughts on the p-Value

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Longitudinal Data Analysis: A Brief Introduction

I presented this brief introduction to longitudinal data analysis in the Department of Community Medicine at the University College of Medical Sciences and Guru Teg Bahadur Hospital, New Delhi as a part of the Residency (PG) Academic Program. Meant as a primer for the MD-students of all the three years, this contains basic principles on the methods applied for analysis of longitudinal studies. I must … Continue reading Longitudinal Data Analysis: A Brief Introduction

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William Gosset: A True Student

Today I attended a Basic Epidemiology class meant for the undergraduate students as I thought it would be good to brush up on my basic knowledge. The topics for the day were Hypothesis Testing and An Introduction to Randomized Controlled Trials, both pretty important ones, no matter which level you are studying at. What struck me was the amount of details the students were taught. … Continue reading William Gosset: A True Student

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MedEd Monday #1: Seductive Statistics

This is a TED talk worth hearing:


In less than 6 minutes, Sebastian Wernicke presents the power of numbers. Aptly titled “LIES, DAMN LIES AND STATISTICS” this is a discourse in how to use numbers. One of my teachers used to say that if you tortured numbers long enough, they would say whatever you wanted them to. And this TED Talk takes it one step further: presenting numbers in an attractive way is equally important in getting your message across (no matter how spurious the associations may be!).

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Knowledge Compression and the Beauty of Data

I stumbled onto this fantastic Ted Talk given by “data detective” David McCandless via a Tweet on the @BMJ_latest account: Editorial brainstorm today with "data detective" David McCandless http://fb.me/Di4njr4o — The BMJ (@bmj_latest) April 13, 2011 If you are like me and like crunching numbers or at least, trying to pry out hidden information from datasets, then I am sure you shall like this talk … Continue reading Knowledge Compression and the Beauty of Data

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IMGs in the USMLE, 2011 Match

Given the growing number of medical students from India who are taking the USMLE, terms like steps, match, scramble, have become more common on the medical school turfs in the sense pertaining to the USMLE. This year, three people I know personally applied for the match. Two of them got through. So, when I got the ECFMG reporter mail, I decided to run down the … Continue reading IMGs in the USMLE, 2011 Match

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