When using the multiple choice option "other", the value of "other" checkbox is not saved in the data set.

For example if question Q1 is answered like this:

[X] A
[ ] B
[X] other: my text

The data set will look like this:

Q1_SQ01 | Q1_SQ02 | Q1_other
Yes [Y] | | my text

However, there is no column for the other option's checkbox, which is needed (or at least very helpful) for analyses and filtering/Expression Manager.

The data set must look like this, including a variable (column) for the other option's checkbox:

Q1_SQ01 | Q1_SQ02 | Q1_SQ03 | Q1_other
Yes [Y] | | Yes [Y] | my text

Ideally the data set would also show which respondents - who saw the question - did not choose an option. This would make analyses of incomplete data sets (which is the norm) way more easy.

Q1_SQ01 | Q1_SQ02 | Q1_SQ03 | Q1_other
Yes [Y] | No [N] | Yes [Y] | my text

But that's another ticket, that I'll post in a minute ;-)