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Dear Forum,

I have
- 2 missing values for a nominal dummy-coded variable (0/1) (moderator analysis)
- 7 missing values for a categorial variable (age groups 1, 2, 3, 4, 5) (control variable)
- 6 missing values for a categorial variable (hierarchy groups 1, 2, 3, 4) (control variable)

I have marked these values with -99.
I did not use the method of replacing the average because of the scales´ level although the rule of < 5% applied.
How should I deal with the missing values? Or can I just leave it like it is and run the analysis?

Thank you very much in advance.

Best regards,
Boddien

Using mean replacement does not make sense for categorical variables that are dummy coded. You may use pairwise or casewise deletion.

Thanks a lot for your advice, Dr. Becker.

Best regards,
Boddien