Example 1 is an epidemiological study of the British population. Marital status was enumerated in a baseline survey in 1984. Time from baseline survey to death was analysed. Data censored at May 1997 when the mortality dataset was last updated. (Cheung, Int J Epidemiol 2000; 29:93-99)

Example 2 is a clinical trial of medical treatment regimes in breast cancer patients in Germany started in 1984. The primary endpoints were time from mastectomy to tumor recurrence and to death. Censored at mid 1997 when the data was analysed. (Sauerbrei et al. J Clin Oncol 2000; 18:94-101)

Example 3 is a paediatric study of Pakistani infants. The primary concern was age at achievement of developmental milestones in relation to size at birth. Data censored at 24 months of age when the follow-up for each newborn was ceased. (Cheung, Yip, Karlberg. Int J Epidemiol 2001;30:66-74)