Tag: #epidemiology

One-Way ANOVA Analyses, by Hand and in R

A student asked for help with a statistical analysis the other night, and I was happy to help. However, he threw me a curveball when he told me he needed to conduct an ANOVA test using only summary data. That is, all he had was the table of results (from a publication) and not the data. Doing an ANOVA by…

Epidemiology for Non-Epidemiologists?

Epidemiology is the basis for much of the work that goes into public health. From the research that gives us the evidence we need to conduct good public health policy, to the work that is done investigating outbreaks, we use epidemiology to help us understand what we are seeing. It’s a scientific branch (or a branch of medicine) that helps…

R Programming and the New Epidemiologists

When I started working as an epidemiologist at a state health department, one of the most often used tools was the Microsoft Office Suite of programs. I used Excel for data analysis and visualization, Access to create and manage databases, Power Point to create presentations, and Word to create reports. Nevertheless, I’ve always been an early adopter when it comes…

EpiRen’s Journal Club: Firearm-Related Hospitalization and Risk of Bad Stuff Thereafter, in Washington State, Between 2006 and 2011

This study is pretty interesting… Researchers in Washington State took hospital records from 2006 and 2007 and found all the firearm-related hospitalizations (FRH) through diagnosis codes. They then matched those cases with hospitalized patients who were not hospitalized for FRH. They used frequency matching, which is one of the various types of matching you do when conducting a case-control or retrospective cohort…