Displaying 1 result from an estimated 1 matches for "rasch_bart".
2010 Mar 15
0
Partial Credit Models using eRm
...it Model) using eRm and have 2 problems which I cannot solve, I have checked everywhere on the net, but no joy:
Firstly,
I have fit a PCM model to 10 variables with differing response categories (3 for the first 6 items, 4 for the following 2 and 2 for the last two items).
mat1 <- matrix(c(rasch_bart$bart_bowel, rasch_bart$bart_blad, rasch_bart$bart_toil, rasch_bart$bart_feed, rasch_bart$bart_dress, rasch_bart$bart_stairs, rasch_bart$bart_trans, rasch_bart$bart_mob, rasch_bart$bart_groom, rasch_bart$bart_bath), nrow=100, ncol=10)
bart_pcm <- PCM(mat1)
summary(bart_pcm)
# Item location...