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An Application of Multiple-Imputation and Sampling-Based Estimation

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  • Haluk Gedikoglu

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    (Cooperative Research Programs, Lincoln University of Missouri)

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    Abstract

    Missing data occurs frequently in agricultural household surveys, which can lead to biased and inefficient regression estimates. Multiple-imputation can be used to overcome the missing-data problem. Previous studies applied multiple-imputation to datasets, where only some of the variables have missing observations and the rest of variables have no-missing observations. However, in reality all the variables in a survey might have missing observations. Currently, there is no theoretical or practical guidance to practitioners on how to apply multiple-imputation when all the variables in a data set have missing observations. The objective of this study is to evaluate the impact of alternative multiple-imputation application methods, when all the variables have missing observations. The data for this study is collected through a mail survey of 2,995 farmers in Missouri and Iowa in spring 2011. Two multiple-imputation methods applied in the imputation-step; one with using only the complete observations, the other with using all the observations. The results of the current study show that using all the observations in the imputation-stage, even if they have missingness, produce estimates with lower standard error. Hence, practitioners should use all the observations in the imputation-stage.

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    File URL: http://fmwww.bc.edu/repec/san2012/gedikoglu.san2012.pdf
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    Bibliographic Info

    Paper provided by Stata Users Group in its series SAN12 Stata Conference with number 5.

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    Date of creation: 01 Aug 2012
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    Handle: RePEc:boc:scon12:5

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    Web page: http://stata.com/meeting/sandiego12/
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