Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Missing binary outcomes under covariate dependent missingness in cluster
  randomised trials   Missing outcomes are a commonly occurring problem for cluster randomised
trials, which can lead to biased and inefficient inference if ignored or
handled inappropriately. Two approaches for analysing such trials are
cluster-level analysis and individual-level analysis. In this study, we
assessed the performance of unadjusted cluster-level analysis, baseline
covariate adjusted cluster-level analysis, random effects logistic regression
(RELR) and generalised estimating equations (GEE) when binary outcomes are
missing under a baseline covariate dependent missingness mechanism. Missing
outcomes were handled using complete records analysis (CRA) and multilevel
multiple imputation (MMI). We analytically show that cluster-level analyses for
estimating risk ratio (RR) using complete records are valid if the true data
generating model has log link and the intervention groups have the same
missingness mechanism and the same covariate effect in the outcome model. We
performed a simulation study considering four different scenarios, depending on
whether the missingness mechanisms are the same or different between the
intervention groups and whether there is an interaction between intervention
group and baseline covariate in the outcome model. Based on the simulation
study and analytical results, we give guidance on the conditions under which
each approach is valid.

11
The categories of this paper are: hep-lat
4
The categories of this paper are: cond-mat
20
The categories of this paper are: acc-phys
21
The categories of this paper are: adap-org
13
The categories of this paper are: quant-ph
37
The categories of this paper are: supr-con
18
The categories of this paper are: econ
17
The categories of this paper are: q-fin
9
The categories of this paper are: nlin
35
The categories of this paper are: mtrl-th
8
The categories of this paper are: hep-ex
27
The categories of this paper are: comp-gas
32
The categories of this paper are: atom-ph
2
The categories of this paper are: math
31
The categories of this paper are: ao-sci
1
The categories of this paper are: cs