DifferenceinDifferences MethodsTools to compute average treatment effects, particularly in the case with multiple periods and variation in treatment timing 


GroupTime Average Treatment Effects 

Aggregate GroupTime Average Treatment Effects 

PreTestingTools to compute “pretest” the DiD assumption in the case where multiple periods are available 

PreTest of Conditional Parallel Trends Assumption 

Plotting and SummarizingTools for plotting and summarizing the results of the att_gt method and aggte method 

Plot 

Plot 

Plot 

summary.MP 

Summary Aggregate Treatment Effect Parameter Objects 

summary.MP.TEST 

print.MP 

print.AGGTEobj 

ClassesClasses available in the did package 

MP 

AGGTEobj 

MP.TEST 

DIDparams 

Helper FunctionsA number of other miscellaneous helper functions 

Multiplier Bootstrap 

Multiplier Bootstrap for Conditional Moment Test 

Process 

Process Results from 

indicator 

build_sim_dataset 

reset.sim 

sim 

trimmer 

glance model characteristics from AGGTEobj objects 

glance model characteristics from MP objects 

tidy results from AGGTEobj objects 

tidy results from MP objects 

DataAvailable datasets in the package 

County Teen Employment Dataset 

Package Documentation 

Difference in Differences 