Study objective: In social epidemiology, it is easy to compute and interpret measures of variation in multilevel linear regression, but technical difficulties exist in the case of logistic regression.

Within each content area, there are one or more tutorials. Each tutorial consists of lessons. Each lesson should be a page detailing the concept being taught, along with sample code. Lesson and page ...

A viral video of an enormous Australian White’s tree frog left people confused about the animal’s real size – turns out it’s not actually as big as you think. Last week, social media users were ...