Presentation ( PPT )

            Full SAS output ( RTF )


SAS code ( TXT )

            Data set ( XLS )


For more information on trajectory modeling and citations to relevant references, please see the following paper:


Charnigo, Richard; Kryscio, Richard; Bardo, Michael; Lynam, Donald; Zimmerman, Rick (2011). “Joint Modeling of Longitudinal Data in Multiple Behavioral Change.” Evaluation and the Health Professions: Volume 34, pp. 781-800.