Creating Hockey-stick covariates

makeHockeyStick(data, covariate, varName)

Arguments

data

a dataframe containing the dataset that needs to be used

covariate

the covariate that needs to be converted to hockey-stick; must be present in the data

varName

the variable name to which the given covariate is to be added

Value

a list of updated data with covariates added, an expression that needs to be added to the model expression, the list of covariate names, and the column names corresponding to the hockey-stick covariates

Author

Vipul Mann, Matthew Fidler