- study
Primary key, name of the study.
- logical_dataset
Primary key, name of the dataset.
- logical_variable
Primary key, name of the variable.
- label
Human-readable label.
- concept
Name of the underlying concept, foreign key to concepts.csv.
- questionnaire
Name of the underlying questionnaire, foreign key to questionns.csv.
- question
Name of the underlying question, foreign key to questions.csv.
- item
Name of the underlying item, foreign key to questions.csv.
- is_primary_key
Boolean indicator, if this variable is part of the dataset's primary key.
- basket_key
Name of an study-specific identifier in this dataset, which is used for the script generator.
- basket_is_default
Boolean indicator, whether a script generator should include this variable by default, if its dataset is used.
- The link to a question (or question item) is only established if the question already exists. There are no new questions created by variables.csv.