## A Quick Explanation on Why 95% Confidence Intervals Get Smaller (For Non-Epidemiologists)

I've been tutoring some students in online MPH programs for a few weeks. We started talking about 95% confidence intervals. All you need to know when reading a confidence interval is that it is used for telling you (the reader) where we (the researcher) are 95% confident that the true measure is located. Here, let [...]

## Yes, There Can Be More Vaccinated People Than Unvaccinated in an Outbreak. Here’s Why.

When they tell you that vaccines don't work, do some math.

## Non-Biostatistician, Non-Epidemiologist Tries to Complain About Biostats and Epi

Don't you love it when people who don't know better think that they know better, and then they end up making fools of themselves? There is a particularly interesting anti-vaccine man by the name of Brian S. Hooker. He has a doctorate in biochemical engineering, according to his Wikipedia page. Maybe you remember BS Hooker [...]

## Don’t set public health policy based on some “very, very simple” statistics (Part 1)

Some people will tell you with a straight face that simple statistical analyses are better than complex ones that account for all sorts of different possible confounders. Not only that, but they'll tell you that you should adopt public health policy based on simple comparisons between two groups. Let me tell you why this is dangerous... Why you should consider the universe surrounding your data.

## The MMR doesn’t cause autism, just like coffee doesn’t cause pancreatic cancer

One of the big lessons that I learned first while getting my master's degree in epidemiology and now that I'm working on the doctoral degree is that biostatistical analyses are only half of the epidemiological story. That is, you can have statistically significant results in your epidemiological study, but the results may not be significant [...]

## More bad epidemiology from Dr. Brian S. Hooker and friends

Remember Dr. Brian S. Hooker? The PhD who published a seriously flawed -- and now retracted -- study in which he said that the MMR vaccine caused autism in African American male boys? Yeah, that one. Well, it appears that he has been busy trying to form a case for the legal action he has [...]

## The relative risk of population-based studies

Most studies carried out in the research of diseases and medications is carried out at the population level. But the findings of such studies may not always apply to the individual in front of you. So you need to take a few things into account.

## The causes of suicide

Doing research for this biostats paper has taught me a few surprising things about suicide.

## So we can rise

It's almost formulaic, isn't it? In almost every narrative of heroism, the hero finds him or herself in a very low point, in a spot where it seems impossible to make a come back and beat the bad guys. In "Superman Returns", we see Superman near drowning in the ocean after being beaten and stabbed [...]