Category

Generalization is Concept.

Superclass hierarchy

Definition

Concept whose role is to define and measure a characteristic.

Examples

The category “Male” is used to define or measure Sex or Gender, which are characteristics. In turn, they are also variables. “Extremely Satisfied” is a category in an agreement scale. This can be used for many kinds of variables.

Explanatory notes

A Category is a Concept. Categories are typically used in the allowed values for qualitative, i.e., nominal and ordinal, variables. A set of categories, say male and female for characteristics sex or gender, helps define those characteristics. Another example is marital status, defined by single, married, divorced, widowed. Each of these is a category.


Subclasses


Properties

Name

Description

Data Type

Multi- plicity

descriptiveText

A short natural language account of the characteristics of the object.

InternationalStructuredString

0..1

Inherited Properties

Name

Description

Data Type

Multi- plicity

agency

Agency expressed as filed with the DDI Agency ID registry [registry.ddialliance.org] with optional additional sub-agency extensions.

:ref:``

1..1

id

ID conforming to the allowed structure of the DDI Identifier and must be unique within the Agency.

:ref:``

1..1

isPersistent

Default value is false indicating that the content of the current version may change (may be in development mode). Set to true when the content of this version will no longer change.

:ref:``

1..1

isUniversallyUnique

Default value is false. If the id of the object was created as a Universally Unique ID (UUID) set to true.

:ref:``

1..1

localId

Locally used identifier unique with a specified context, such as a variable name within a dataset.

LocalIdFormat

0..*

version

Version number of the object.

:ref:``

1..1

versionDate

Date and time the object was changed expressed in standard ISO formats.

XSDdate

0..1

versionRationale

Reason for making a new version of the object.

RationaleDefinition

0..1

versionResponsibility

Contributor who has the ownership and responsibility for the current version.

:ref:``

0..1

definition
from Concept

Natural language statement conveying the meaning of a concept, differentiating it from other concepts. Supports the use of multiple languages and structured text.

InternationalStructuredString

0..1

displayLabel
from Concept

A structured display label providing a fully human readable display for the identification of the object. Supports the use of multiple languages and structured text.

LabelForDisplay

0..*

name
from Concept

A linguistic signifier. Human understandable name (word, phrase, or mnemonic) that reflects the ISO/IEC 11179-5 naming principles. If more than one name is provided provide a context to differentiate usage.

ObjectName

0..*

Diagram

TBD