Category Level Statistic

May include frequencies, percentages, or crosstabulation results. This field can contain one of the following:

1. textual information (e.g., PCDATA), or

2. non-parseable character data (e.g., the statistics), or

3. some other form of external information (table, image, etc.)

In case 1, the tag can be used to mark up character data; tables can also be included in the actual markup. In cases 2 or 3, the element can be left empty and the "URI" attribute used to refer to the external object containing the information.