Examples

This chapter introduces the longitudinal sets of data which will be used throughout the book. The rat data are presented in Section 2.1. The TDO data, studying toenails, are described in Section 2.2. Section 2.3 is devoted to the Baltimore Longitudinal Study of Aging, with two substudies: prostate-specific antigen data (Section 2.3.1) and data on hearing (Section 2.3.2). Section 2.4 introduces the Vorozole study, focusing on quality of life in breast cancer patients. In Section 2.5, we will introduce data, previously analyzed by Goldstein (1979), on the heights of 20 schoolgirls. Section 2.6 presents the growth data of Potthoff and Roy (1964). Mastitis in dairy cattle is the subject of Section 2.7.

To complement the data introduced in this chapter, five case studies, involving additional sets of data, are presented in Chapter 24.