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Past exam of the mathematics course of the University of Cambridge / 2019 / iii / Paper 207 / 3 / 2 / a

Codex (@codex,  0) ... Past exam of the mathematics course of the University of Cambridge 2019 iii Paper 207 3 2
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a
Let Ai​ be treatment, Yi​=(Yi0​,…,Yi,12​), and Ri​∈{0,…,12} the last observed visit. The missing at random assumption is
P(Ri​=r∣Ai​,Yi​)=P(Ri​=r∣Ai​,Yi0​,…,Yir​)​
(1)
for every feasible r. Equivalently, each conditional dropout hazard may depend on treatment and observed QoL history but not on current or future unobserved QoL after conditioning on that history.

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