To use process to update tables at a given level only, type:

process is followed by the name of an analysis level lower than the level currently being processed in the Edit. This passes control to the tabulation section and updates only tables at the named level. The format of the statement is:

This is useful when information for a specific level is on the same card as its parent level. Suppose the level Trip is a sub-level of Person, as follows:

You might write the loop as:

However, process can produce unreliable results with hierarchical data that has more than two levels. So when there is information for more than two levels on the same card, it is preferable to recode the data so that each level is on a separate card.

For a full discussion of process, see Going temporarily to the tab section.