Summary reports - OPEN/CLOSED status

For summary reports, I'm interested in knowing whether we can add information that can report on whether the incident is in the OPEN or CLOSED state (as defined by the workflow).

We're trying to use the summary reports as data for custom reports and want to filter so we're only showing OPEN issues.  Obviously there are workarounds to this (filtering so only the OPEN class statuses are displayed, or by adding custom lookup tables which define each of the statuses as OPEN or CLOSED) but hoping to be able to have this information displayed in the standard report if this is possible.

Thanks for any input on this matter.