7 Restructuring SAS Data Sets Using Arrays
Creating a New Data Set with Several Observations per Subject from a Data Set with One Observation per Subject
Another Example of Creating Multiple Observations from a Single Observation
Going from One Observation per Subject to Many Observations per Subject Using Multidimensional Arrays
Demonstrating the Use of a Multidimensional Array
Another Example of a Multidimensional Array
One approach to working with longitudinal data sets is to restructure the data set—either going from one observation per subject (or other unit of analysis) to several or vice versa. For example, you may have several diagnosis codes in a single observation (visit) and want to ...
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