George J. Knafl, Ph.D.
Analyzing Longitudinal Data
Details of paper in Research in Nursing & Health.
Knafl GJ, Beeber L, Schwartz TA.
A Stategy for Selecting among Alternative Models for Continuous Longitudinal Data.
Research in Nursing & Health, 35, 647-658. doi: 10.1002/nur.21508.
- PDF copy of the abstract of the paper:
- Internet source for the smoking data analyzed in the paper:
SAS code for generating reported analyses.
See documentation in the code for details.
Use of the code is limited as indicated in the documentation for the code. For permission
for other uses, contact
All rights reserved. No warranties granted, explicit or implicit. Versions of macros available here
were those used to compute the reported results. For the latest versions of those macros, see
SAS software. Requires Base SAS, SAS/STAT, and PROC IML.
- SAS macro for computing likelihood cross-validation (LCV) scores for linear mixed models:
- SAS code used to load in the smoking data:
- SAS code used to generate reported analyses of the smoking data: