Become insignificant after MI
Posted: Wed Jan 02, 2013 6:24 am
When I imputed missing values for an ordinal categorical variable (using REALCOM-impute) and then fitted the MOI to imputed data sets & combined results using Rubin's rule, all the categories (dummy variables) of that variable became insignificant. But in complete case analysis one category was significant. I need to know,
1. Does this indicate my imputations are wrong?
2. Should I fit another MOI that does not include that variable to my data set?
1. Does this indicate my imputations are wrong?
2. Should I fit another MOI that does not include that variable to my data set?