Data Definition Standards
The table below contains the basic elements of the Studytrax data definition and the defaults used if the Studytrax team assists with setup. Use the data definition spreadsheet (DataDictionaryTemplateBasic.xlsx) to ensure forms/CRFs/Questionnaires are set up correctly. Learn more about how to communicate the data definition here.
Attribute | What’s Needed | Default Used if no information provided |
|---|---|---|
Variable Name | Descriptive Name | |
Unique code (no spaces/special characters [underscore ok]) | ||
Variable Type | Numeric – What is the range (min / max)? Units? | No range, no unit |
Calculation - How calculated? What if missing some values? | All values required for a calculation | |
Text - How many characters needed?
| Unlimited for questions like "Describe", "Comments" | |
Date – What is acceptable range? | Any valid date can be entered | |
Document – How many files and how large? | ||
Picklist (Coded list of value/label pairs, such as 0 = Male, 1 = Female). - What are the values and labels for all options? - do you want values displayed for data entry? - Can more than one option be selected? | 0=No, 1=Yes Other lists would start with 0 and increment by 1 Values are not displayed Only one option can be selected | |
Other | Exportable – Can values be exported in dataset? | Exportable |
Missing Values – Will value/label pairs are defined as “Missing” (e.g., Missing = -9)? | No missing value definition set up if not specified | |
Required - Must a value be entered? | Yes | |
| Skip Patterns - When is the variable/form either shown / hidden? | Always visible | |
| Target User - Will subjects or staff fill out the form? | Staff |