addColumns              Add columns to existing data set
addCorData              Add correlated data to existing data.table
addPeriods              Create longitudinal/panel data
defData                 Add single row to definitions table
defDataAdd              Add single row to definitions table that will
                        be used to add data to an existing data.table
defMiss                 Definitions for missing data
defRead                 Read external csv data set definitions
defReadAdd              Read external csv data set definitions for
                        adding columns
defSurv                 Add single row to survival definitions
genCluster              Simulate clustered data
genCorData              Create correlated data
genData                 Calling function to simulate data
genMiss                 Generate missing data
genObs                  Create an observed data set that includes
                        missing data
genSurv                 Generate survival data
mergeData               Merge two data tables
trtAssign               Assign treatment
trtObserve              Observed exposure or treatment
