Combined with survival status and other covariates, each row provides information of survival in that time interval. Upon organizing data to reflect the nature of time-dependent covariates, one needs to choose methods that appropriate for the study objectives and the data. Recurrent Events Background Seven hundred and three patients were recorded in this part of the clinical trial for herpetic eye disease. Patients were randomly assigned to either placebo or Acyclovir, a drug treating herpetic eye disease. Patients enrolled in the study all had a history of the disease.
Data are available with regard to time from last onset to treatment, and number of episodes.
Study objective is to see if treatment by Acyclovir can delay or reduce recurrence of the diseases. Four hundred and eighty six patients were free of recurrence during the study period, and 217 patients had at least one recurrence with a total of 342 recurrences. The following is a list of variables included in the dataset. Identifies recurrence in the same patient. More Details Data need to be re-organized to reflect recurrent events.