At the month-48 analysis, the observed time from treatment start is:
$$
\begin{array}{c|cccccc}
\text{patient}&A&B&C&D&E&F\\ \hline
\text{time}&26&7&13&37&7&27\\
\text{status}&\text{death}&\text{death}&\text{death}&\text{censored}&\text{death}&\text{death}.
\end{array}
$$
For example, patient D contributes $48-12+1=37$ months. This is <right censoring> at a common calendar data cutoff but with staggered treatment entry.

Solution

Past exam of the mathematics course of the University of Cambridge / 2023 / iii / Paper 207 / 5 / i / Solution

 Solution

ID: past-exam-of-the-mathematics-course-of-the-university-of-cambridge/2023/iii/paper-207/5/i/solution