Multiple imputation in three or more stages
نویسندگان
چکیده
منابع مشابه
Multiple Imputation in Two Stages
Conventional multiple imputation (MI) (Rubin, 1987) replaces the missing values in a dataset by m > 1 sets of simulated values. We describe a two-stage extension of MI in which the missing values are partitioned into two groups and imputed N = mn times in a nested fashion. Two-stage MI divides the missing information into two components of variability, lending insight when the missing values ar...
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When some of the records used to estimate the imputation models in multiple imputation are not used or available for analysis, the usual multiple imputation variance estimator has positive bias. We present an alternative multiple imputation approach that enables unbiased estimation of variances and, hence, calibrated inferences in such contexts. First, using all records, the imputer samples m v...
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Many statistical agencies, survey organizations, and research centers collect data that su↵er from item nonresponse and erroneous or inconsistent values. These data may be required to satisfy linear constraints, e.g., bounds on individual variables and inequalities for ratios or sums of variables. Often these constraints are designed to identify faulty values, which then are blanked and imputed...
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Cole et al. in this issue 2 propose that MI may also be useful in dealing with a second problem rife in epidemiology: exposure measurement error, which typically causes underestimation of exposure–disease associations (regression dilution bias). 3 They coin the acronym MIME (multiple imputation for measurement error) and show that this method can indeed remove regression dilution bias. How wide...
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It is a common occurrence in plant breeding programs to observe missing values in three-way three-mode multi-environment trial (MET) data. We proposed modifications of models for estimating missing observations for these data arrays, and developed a novel approach in terms of hierarchical clustering. Multiple imputation (MI) was used in four ways, multiple agglomerative hierarchical clustering,...
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ژورنال
عنوان ژورنال: Journal of Statistical Planning and Inference
سال: 2016
ISSN: 0378-3758
DOI: 10.1016/j.jspi.2016.04.001