Data is from UF Biostatistics Open Learning Textbook: http://bolt.mph.ufl.edu/2012/08/02/learn-by-doing-exploring-a-dataset/

Summary of the variables in our dataset:

• Hospt: The patient’s hospital, represented by a code for each of the 5 hospitals (1, 2, 3, 5, or 6)

• Treat: The treatment received by the patient (Lithium, Imipramine, or Placebo)

• Outcome: Whether or not a recurrence occurred during the patient’s treatment (Recurrence or No Recurrence)

• Time: Either the time (days) till recurrence, or if no recurrence, the length (days) of the patient’s participation in the study.

• AcuteT: The time (days) that the patient was depressed prior to the study.

• Age: The age of the patient in years, when the patient entered the study.

• Gender: The patient’s gender (1 = Female, 2 = Male)