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The following pages detail the DDI profile of the DDI implementation CLOSER has or will adopt. It lists all the DDI fields in use and gives a description of how they are used. It also lists whether fields are repeatable or not and whether they are required or not. These do not always match the DDI Lifecycle standard overall. Fields considered optional in DDI Lifecycle are required in CLOSER, for example, to ensure a consistent experience for users. In no case, however, does the CLOSER profile break the rules of DDI Lifecycle. This is up to date for DDI Lifecycle 3.2.

The profile is designed to explain the content to users and allow them to map their content to DDI. An XML DDI profile is also available. DDI terminology is used here. The content has been broken into separate tables for ease of reading. Colours are used to make it clearer what level each item is at and how it sits within other items.

Note you will see that Data Collection and Questionnaire are separate items. The Questionnaire refers to just the questionnaire itself. The Data Collection refers to the use of the questionnaire i.e. when it was used, who did the data collection, etc.