Exercise:
Chemotherapy was performed for a certain malignant tumor. A data chart of (allocated patient number), date of onset of treatment, the latest date of survival, and patient outcomes (survival, 0; death,1; withdrawn, 2) is shown below.
Make a data worksheet including numbers of ‘patient’, ‘patient death’, and ‘withdrawal of therapy’ to compare the cumulative actuarial probabilities of survival among different follow-up periods.
