A code that identifies the questionnaire as falling into a particular group of like questionnaires; e.g. "Pediatric", "Admissions", "Research", "Demographic", "Opinion Survey", etc.

A label for a particular group or question within the questionnaire.

The minimum number of times the group must appear or the minimum number of answers for a question - when greater than 1.

The maximum number of times the group must appear or the minimum number of answers for a question - when greater than 1 and not unlimited.

If true, indicates that the containing group or question should not be displayed to the user for data entry.

If present, indicates that the group or question containing the extension should only be enabled (allow an answer to be present and, in most circumstances, even be visible to the user) when the specified condition is true.

The type of data entry control that should be exposed to the user when capturing the answer to the question.

Identifies the desired orientation when rendering a list of choices (typically radio-box or check-box lists).

This is the value that should be pre-populated when rendering the questionnaire for user input.

If true, the value cannot be changed by a human respondent to the Questionnaire.

A reference to the Data Element that corresponds to the question text and answer constraints for this question.

Identifies a map that links the questionnaire (source) to a DataElement server and identifies which questions correspond to which data elements (by linkId and local identifier, respectively).

Where the type for a question is "Reference", indicates a type of resource that is permitted.

The text provides instructions intended to be rendered with the element explaining how the content of the element is to be completed. This should be rendered in-line before the question or group.

The text describes specific security and/or privacy considerations associated with the element; e.g. retention rules, data access control expectations, etc.

The content is intended for display if a user selects an icon or performs some other action seeking help about the element.

The content is intended for use in a fly-over or similar display mechanism - primarily intended for online form entry.

The text should be displayed after all of the other the content of the group or question.

Identifies the units in which the question's answer should be captured.

When a coded ordered value is selected from a range, indicates the label lifted to the left of the first value; e.g. The "very unsatisfied" in "very unsatisfied 0 1 2 3 4 5 very satisfied".

When a coded ordered value is selected from a range, indicates the label lifted to the right of the last value; e.g. The "very satisfied" in "very unsatisfied 0 1 2 3 4 5 very satisfied".

The maximum number of characters that must be present in the simple data type to be considered a "valid" instance.