Longitudinal Data Analysis Using SUDAAN
Creel, D. V. (2007, August). Longitudinal Data Analysis Using SUDAAN. Presented at ASA JSM 2007, Salt Lake City, UT.
SUDAAN: Software for the Statistical Analysis of Correlated Data (SUDAAN) can be used to analyze data from surveys with complex designs. A possible feature of a complex survey design is clustering. One way in which clustering can occur is to have the same information collected on a sampling unit at different points in time. This type of clustering creates data that may be referred to as longitudinal, panel, or repeated measures data. This paper provides an example of longitudinal data analysis using SUDAAN. The example covers the structure of the data and data set; analytic strategies and interpretation; and the implementation of the analytic strategies using SUDAAN.