The data have a <monotone missing-data pattern>: $Z$ is always observed; a missing $Y$ always entails a missing later $W$; and $W$ may be missing after an observed $Y$.

Solution

Past exam of the mathematics course of the University of Cambridge / 2022 / iii / Paper 207 / 2 / 2 / 5 / Solution

Repeated measurements have a monotone missing-data pattern when every measurement after a subject's first missing value is also missing.


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 Incoming links: Monotone missing-data pattern