Glossary of terms

Table 1
Conventionally, the first table in a epidemiology paper or clinical trial that summarizes characteristics of the study population.

Variable of Interest
A characteristic you want to include because it is relevant to your baseline populations. Examples might include income level, comorbidities, ethnicity, or educational level.

Variable Type
The nature of a variable determines it's variable type. Variable types supported in include:

  • categorical variables (such as gender)
  • continuous, normally distributed variables such as age or blood pressure
  • continuous variables that follow a non-normal distribution. These frequently include measures related to survival or reaction times (Bono et al., 2017)

A common measure for statistical significance of differences between groups. The correct selection of test to determine the p-Value depends on the variable type. uses t-tests for normally distributed variables, and Kruskal-Wallis tests for non-normal (skewed) variables.