Author: René F. Najera, DrPH

I'm a Doctor of Public Health, having studied at the Johns Hopkins University Bloomberg School of Public Health. All opinions posted here are my own, of course, and they do not necessarily reflect the opinions of my school, employers, friends, family, etc. Feel free to follow me on Twitter: @EpiRen

Big Changes

Change can be hard sometimes, unless you’re used to it. Other times, you forget that there was change in your life all the time because you became complacent to the things around you. Change is not bad… Change is a welcomed, uh, change.

Sample Sizes and Statistical Significance

Some dude said I didn’t know what I was talking about because, in his world, a small sample size with a statistical significance only gets more statistically significant if the sample size increases. He’s also an antivaxxer, so…

The Safe Places We’ll Give You

When I was a child, there was only one place where I fell asleep at night without any problem. Even at my own home, I had a hard time falling asleep. There were a lot of noises coming in from the outside, or some sort of family drama would seep in and take my sleep. But at my paternal grandparents’…

Some Things I Learned This Week

I’ve been at the annual conference of the Council of State and Territorial Epidemiologists all this week. The first conference I attended was back in 2008, when I was working at the Maryland Department of Health as an epidemiologist doing influenza surveillance. I remember it being a lot of fun because I got to learn a lot from people who had the same interests as I did. This has not changed much since then, but things around us in the world have. Let me explain…

Looking at Unmet Health Needs in Chicago, 2013

When comparing two or more health indicators, it’s important to keep in mind that they might be on a different scale and presenting completely different information. In order to make the comparison more accurately, you can standardize the variables’ values and then create a Health Condition Index. So let’s use R and some open data to see how this can be done.