I have missing values (MCAR) for which I used EM to fill in those values. Some of the imputed values are negative integers or zero. I am using a likert scale to measure responses, and thus i need the missing values to equal between 1 and 5.
To deal with this problem i re-coded my data table in SPSS so that likert scale runs from 0 to 4, this way if the obtained missing value equals zero I can use it. However this does not solve the negative integers. Is it possible to put a restriction on the results so that they don't come up as negative?
Any suggestions, or references to a book/article about this?
Update: to anyone sharing this problem, this may be helpful: