setModel | R Documentation |
This function creates an object of class tlseModel
. The model
contains all specifications about the model being estimated including
the starting knots for the control and treated group for the piecewise
polynomial.
setModel(form, data, nknots = function(n) n^0.3,
knots0 = NA, knots1 = NA, userRem=NULL, ...)
form |
A formula for the regression (outcome versus treatment
indicator) and a formula for the covariates to include in the
regression, separated by |
data |
A |
nknots |
A function to determined the number of knots. It has to be a function of one argument, the sample size. To fix it, simply input a function that returns an integer. |
knots0 |
A list of knots for the control group. The length must
be equal to the number of covariates. The number of knots is 0 an
element of the list is set to |
knots1 |
A list of knots for the control group. See |
userRem |
A vector of characters representing the covariates not to be apploximated by a piecewise polynomial. |
... |
Corrently not used. |
data(simData)
mod1 <- setModel(Y~Z|~X1*X2, data=simData)
mod1
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