Random Effects Pattern Mixture Model

13:31 Feb 29, 2020
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English to Russian translations [PRO]
Medical - Medical: Pharmaceuticals / Summary of Clinical Efficacy
English term or phrase: Random Effects Pattern Mixture Model
REM
For the sensitivity analysis based on the Random Effects Pattern Mixture Model (REM) with two patterns, study subjects are categorized as completers and dropouts to further examine the possible effects of missing data on study results.
Results of the sensitivity analysis based on PMM using a placebo-based multiple imputation method and based on the REM were consistent with those obtained for the MMRM model for both lurasidone 40 and 80 mg/day treatment groups, and therefore support the robustness of the primary efficacy analysis.
Results of the sensitivity analysis based on the PMM using a placebo-based multiple imputation method (Study D1050301 Table 14.2.2.1.4) and based on the REM (Study D1050301 Table 14.2.2.1.5) were consistent with those obtained for the MMRM model for both lurasidone 40 and 80 mg/day treatment groups, and therefore support the robustness of the primary efficacy analysis.
Julia Berezina
Local time: 10:58


Summary of answers provided
3 -1Случайных Эффектов Смешения-Паттернов Модели
Navid Azizi Pirmohamadi


Discussion entries: 2





  

Answers


1 hr   confidence: Answerer confidence 3/5Answerer confidence 3/5 peer agreement (net): -1
Случайных Эффектов Смешения-Паттернов Модели


Explanation:
this is how it goes.
ABSTRACT
Random-effects models are popular for the analysis of longitudinal data in part because they easily handle missing
response data. If whether data are missing or not, known as missingness, is independent of the missing data, then
the missingness is ignorable. Random-effects pattern-mixture models are models that allow one to evaluate if the
missingness is ignorable. In these models, one or more between-subjects variables are created to represent patterns
of missing data, such as dropout, and are added to the model. Within each missing data pattern the missingness is
assumed to be ignorable. Typically, these models rely on only a small number of pattern indicators to represent the
missing data patterns, and the effects of the pattern indicators are fixed across subjects. Less common are
applications of models in which the missing data patterns are random effects. This paper considers both types of
models and their extensions to address participant dropout and intermittent patterns of missing data. In particular,
beginning with SAS/STAT version 9.4 TS1M20, it is possible to estimate a 3-level model using NLMIXED, making it
possible to fit a random pattern-mixture model that includes nonlinear coefficients. Empirical longitudinal psychiatric
data are used to illustrate these models.


    https://www.researchgate.net/publication/232475500_Application_of_Random-Effects_Pattern-Mixture_Models_for_Missing_Data_in_Longitudinal_Stu
    https://www.lexjansen.com/wuss/2015/43_Final_Paper_PDF.pdf
Navid Azizi Pirmohamadi
Germany
Local time: 09:58
Native speaker of: Native in EnglishEnglish

Peer comments on this answer (and responses from the answerer)
disagree  Natalie: Не используйте гугл-транслейт
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