rddapp provides a set of functions for the analysis of the regression-discontinuity design (RDD).

The three main parts are:

• estimation of effects of interest
• power analysis
• assumption checks

The package estimates treatment effects from RDDs, for the following designs and approaches:

• parametric RDD with single assigment variables, both sharp and fuzzy designs
• non-parametric RDD with single assignment variables, both sharp and fuzzy designs
• parametric RDDs with two assignment variables, both sharp and fuzzy designs, using univariate, centering, and frontier approaches

Given input from the user about desired Type I error rate, and assumptions about the population, the package allows estimation of power for the following designs:

• single assigment RDDs (both sharp and fuzzy) using both parametric and non-parametric estimation
• multiple-assigment RDDs (both sharp and fuzzy) using various parametric models

The package allows the user to perform a variety of assumption and sensitivity checks.

• McCrary"s sorting test on the assignment variable
• Sensitivty to the chosen bandwidth in non-parametric estimation
• Placebo tests to examine treatment effects at values away from the cut-off
• Discontinuities in the treatment probability at cut-off
• Discontinuities for baseline covariates

# Install the released version from CRAN
install.packages("rddapp")