Modeling Longitudinal Data

Robert Weiss

SAS Data Sets

• Anthropometry 1
• Anthropometry 2 (use for homework 1)
• Bolus Counts (Henderson and Shimakura)
• BSI Total
• BSI Total Long Version
• Cognitive
• Dental
• Mice Big (Balanced with missing format) (Izenman and Williams 1989)
• Mice Small
• Morbidity (Kenya)
• Ozone data with covariates
• Nurses Blood Pressure Study
• Ozone Data
• Pediatric Pain
• Tracking (OZDASL)
• Schizophrenia data (Hedeker)
• Vagal Tone
• Wallaby Growth
• Weight Loss Version 1 (weekly observations)
• Weight Loss Version 2 (day of observations, visit type)
• Three versions of the Hypothetical Weight Loss data set, chapter 4, table 4.1.
• Complete Data
• Missing At Random (MAR)
• Missing Not At Random (MNAR)

Data in Tab Delimited Text Files

• Anthropometry 1
• Anthropometry 2 (use for homework 1)
• Bolus Counts (Henderson and Shimakura)
• BSI Total
• BSI Total Long Version
• Cognitive
• Dental
• Mice Big (Balanced with missing format) (Izenman and Williams 1989)
• Mice Small
• Morbidity (Kenya)
• Ozone data text files
• Complete ozone data long format with covariates
• Ozone data set long format without site covariates
• Ozone site covariates
• Nurses Blood Pressure Study
• Ozone Data
• Pediatric Pain: pain tolerance data, long format for univariate longitudinal data
• Pediatric Pain wide format data for bivariate longitudinal analyses
• Pediatric Pain variable definitions for wide format bivariate longitudinal analyses
• Tracking (OZDASL)
• Schizophrenia data (Hedeker)
• Vagal Tone
• Wallaby Growth (OZDASL)
• Weight Loss Version 1 (weekly observations)
• Weight Loss Version 2 (day of observations, visit type)
• Three versions of the Hypothetical Weight Loss data set, chapter 4, table 4.1.
• Complete Data
• Missing At Random (MAR)
• Missing Not At Random (MNAR)

Additional Tab-Delimited Data Sets in .txt format.

• Cochlear implant data. From Nunez-Anton, V. and Woodworth, G.G. (1994).
• 100k race split times. From Jolliffe (2002). Principal Component Analysis. Springer.
• Kenward's cow weight data. From Kenward (1987).

Zip file with all data files in it. Sas data sets are in main directory, tab delimited text files are in the subdirectory "tabdelimiteddata".

References

• Hedecker's web site with the schizophrenia data.
• Henderson, Robin and Shimakura, Silvia (2003). A serially correlated gamma frailty model for longitudinal count data. Biometrika, 90, 355-366.
• Izenman, Alan J. and Williams, J. S. (1989). A class of linear spectral models and analyses for the study of longitudinal data. Biometrics, 45, 831-849.
• Jolliffe, I. T. (1986). Principal component analysis. Springer-Verlag Inc (Berlin; New York). ISBN=0-387-96269-7.
• Kenward, Michael G. (1987). A method for comparing profiles of repeated measurements (Corr: 91V40 p379). Applied Statistics, 36, 296-308.
• Nunez-Anton, V. and Woodworth, G. G. (1994). Analysis of longitudinal data with unequally spaced observations and time-dependent correlated errors. Biometrics, 50, 445-456.
• OZDASL is the Australasian Data and Story Library.
• Richard F. Potthoff and S. N. Roy (1964). A generalized multivariate analysis of variance model useful especially for growth curve problems. Biometrika, 51, 313-326.

Robert Weiss			   http://rem.ph.ucla.edu/~rob/
Department of Biostatistics        e-mail: robweiss at ucla.edu
UCLA School of Public Health                FAX: (310) 267-2113
Los Angeles, CA 90095-1772 USA            Phone: (310) 206-9626