Construct the two countries' period-specific <risk sets> with the same <left truncation> and <right censoring> rules, then compare their event counts by a <Log-rank test>. This is a nonparametric comparison because it does not specify the shape of either country's <hazard function>.

Solution

Past exam of the mathematics course of the University of Cambridge / 2024 / iii / Paper 207 / 6 / b / i / Solution

 Solution (source code)