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dear all,
I'm building a 3+1 model with multivariate responses (3 binary outcomes with logit link). I want to plot the predictions grouped by countries (higher level). When I try MlWin give me "Input columns have unequal leghts". Of course my prediction column (Y) has 406935 cases (135656 * 3 responses, 2/3 empty) whereas the cohort colum (X) has only the original 135656. How can I solve?

Thanks you!

In your data there should be generated columns of the form X.response, which are expanded to the longer length. These contain the value for their associated response or a zero for rows corresponding to the other responses. You can therefore use these columns instead when plotting your predictions.