We Judith Singer and John B. Willett welcome you to the webpage that we have created to support our recent book, Applied Longitudinal Data Analysis (ALDA), New York: Oxford University Press, March, 2003

We intend ALDA to be a professional book for empirical researchers and graduate students in the behavioral, social, and biomedical sciences. It offers an accessible in-depth presentation of two popular statistical methods for analyzing longitudinal data: multilevel modeling of individual change and hazard/survival modeling for event occurrence in both discrete- and continuous-time.

In ALDA, using real data from published studies, we take you step-by-step through complete longitudinal data-analyses, from exploratory strategies for displaying your data sensibly to the specification, fitting, and interpretation of complex statistical models.