patt.worth {prefmod} | R Documentation |
Worth parameter are calculated from the results of a pattern model fit.
The resulting estimates for all groups are based on the subject covariates as
specified in the model formula (formel
) of a pattern model.
patt.worth(obj, obj.names = NULL)
obj |
Object of class pattMod obtained from pattern model fit. |
obj.names |
names for the objects, for repeated measurement models just the names of objects for the first time point |
patt.worth
returns an object of class pattW
, which is in fact the matrix .
of worth parameters for all groups appropriately labelled.
The function print (i.e., print.pattW) can be used to print the matrix, the function
plotworth
gives a plot of the estimates. The matrix
itself can be obtained by using unclass
.
Reinhold Hatzinger
## fit only first three objects with SEX effect data(cemspc) m2<-pattPC.fit(cemspc, nitems=3, formel=~SEX, elim=~SEX, undec=TRUE) ## calculate and print worth parameters m2worth<-patt.worth(m2) m2worth ## display the transpose of the worth parameter matrix t(unclass(m2worth))