SPSS to DDI 3.0 Prepared for IASSIST 2006 Workshop – Hand’s-on DDI 3.0 – Concept, Structure, and Tools 23 May 2006 Wendy Thomas – University of Minnesota

Process Identifying where things in SPSS go in DDI 3.0 Some minor calculations Tracking ID’s Walk-through

Logical Product Capture the variables Capture the categories Create the category groups Assemble the variables Dealing with “empty” variables Retaining the variable IDs and their associated names Example

Physical Data Product Gross Record structure information Linking to variables Calculating the width Example

Physical Instance The only piece of information found in the SPSS file will be the name of the data file Good news is that if you rerun the extraction with different selection criteria you only need to make another physical instance and reuse the other modules Example

Overview Available information Derived information  File names  ID’s  Calculated values Some items can be “pre-entered”  Indentifying Agency  Version number Hand entry