itt_tot_model: ITT and TOT Model Function
In skirmer/skpack: Personal package of functions I use regularly.

This function computes multiple ITT and TOT models at once. Produces robust standard errors.

1	itt_tot_model(sourcefile, I, varlist, assignvar, treatvar, weight = NULL)

`sourcefile`	is your dataframe, should include a variable for treatment assignment and whatever demographics.
`I`	is the outcome being predicted.
`varlist`	is a vector of your covariates (things you are controlling for)- all should be the names of columns in your dataset.
`assignvar`	is the specific column that specifies the treatment/control split in your sample. Also, your blocking variable should be "blocknum".
`treatvar`	is the column specifying actual treatment dosage regardless of assignment.