Definitions for column headings on the Variables tab in the data dictionary

Column Heading	Definition	Required or Optional
Variable Group Name	The name of the form / CRF	Required
Variable Group Description	Description of the form / CRF	Optional
Variable Name	The name of the variable	Required
Variable Description	Description of the variable	Optional
Category	Project or Encounter Project variables are collected once and not connected to an encounter date. Encounter Variables can be collected at multiple timepoints are are connected to an encounter.	Required
Type	The type of variable, can only select from the list	Required
Code	A unique identifier for the variable. It can't have any special characters (e.g. spaces) and can't exceed 30 characters in length. The code can contain letters, numbers, and/or an underscore but can't begin with a number.	Required
Data Entry Prompt	The text displayed in data entry	Optional, but typically used
Min Value	The minimum allowable value for data entry (applies to numeric variables only)	Optional (for numeric variable types only)
Max Value	The maximum allowable value for data entry (applies to numeric variables only)	Optional (for numeric variable types only
Default Value	A value that the variable will have by default	Optional
Length	The number of digits that can be entered, the length must be 1 - 255 (applies to text variables only)	Required only for Text variable types
Required	Must select one of the options. No: a null value will not affect completion status. Yes, can be null: a null value can be saved but the form will be incomplete. Yes, cannot be null: a value must be entered before the form can be saved.	Required
Active	Must select from the options. Yes: the variable is active and data will be collected. No: the variable is not active and will not show up in data entry. For new variables, this would always be "Yes"	Required
Indent Level	Can specify a value of 1-10 to indent the variable on the data entry page	Optional
Prompt Width	Can specify a value in pixels to indicate the space allocated to the data entry prompt	Optional
Answer Width	Can specify a value in pixels to indicate the space allocated to the answer	Optional
Exportable	Must select from the options. Yes: this is the common selection. This indicates that the variable's value can be exported in a data set No: The variable's value will not be exportable in a data set. Typically used for a note.	Required
Pick Lists (Value, Missing, Name)	Define the pick list value, indicate yes or no if it is to be considered a missing value, indicate the name of the picklist option. Applies to categorical variables only.	Required for Pick List and Radio Button variable types
Missing Values (Begin, End, Name)	Applies to numeric variables only. Indicate a range and name for values that are not considered part of the variables range. For example, the following indicates that a value of -99 for a numeric variable means the value is unknown: -99,-99, Unknown	Optional (for numeric variable types only)

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