Imputation Strategies for Incomplete Longitudinal Binary Data
碩士 === 淡江大學 === 統計學系碩士班 === 99 === It is very common for longitudinal studies to involve missing data. The imputation method is one of the effective procedures for handling with the problem of missing data. Based on the well-developed multiple imputation for normal responses and a random number gene...
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ndltd-TW-099TKU053370022016-04-13T04:17:35Z http://ndltd.ncl.edu.tw/handle/07067288866067263662 Imputation Strategies for Incomplete Longitudinal Binary Data 不完整長期追蹤二元資料之插補策略 Tzu-Ying Li 李紫熒 碩士 淡江大學 統計學系碩士班 99 It is very common for longitudinal studies to involve missing data. The imputation method is one of the effective procedures for handling with the problem of missing data. Based on the well-developed multiple imputation for normal responses and a random number generation algorithm for binary outcomes, Demirtas and Hedeker (2007) introduced a quasi-imputation strategy for incomplete longitudinal binary data. The shortcomings of Demirtas-Hedeker approach are that positive-definiteness of the correlation matrix cannot be guaranteed and the correlations need to satisfy the constraint for a unique solution. To improve the shortcomings of Demirtas-Hedeker method, the proposed methods can be regarded as the modification of Demirtas-Hedeker method with simpler procedures. The performance of Demirtas-Hedeker method and the proposed procedures is compared in terms of standardized bias, coverage percentage, and root-mean-squared error under various configurations of missing rates and missingness mechanisms. A real data set is used to illustrate the application of the proposed methods. 陳怡如 2011 學位論文 ; thesis 38 en_US |
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碩士 === 淡江大學 === 統計學系碩士班 === 99 === It is very common for longitudinal studies to involve missing data. The imputation method is one of the effective procedures for handling with the problem of missing data. Based on the well-developed multiple imputation for normal
responses and a random number generation algorithm for binary outcomes, Demirtas and Hedeker (2007) introduced a quasi-imputation strategy for incomplete longitudinal binary data. The shortcomings of Demirtas-Hedeker approach are that positive-definiteness of the correlation matrix cannot be guaranteed and the correlations need to satisfy the constraint for a unique solution. To improve the shortcomings of Demirtas-Hedeker method, the proposed methods can be regarded as the modification of Demirtas-Hedeker method with simpler procedures. The performance of Demirtas-Hedeker method and the proposed procedures is compared in terms of standardized bias, coverage percentage, and root-mean-squared error under various configurations of missing rates and missingness mechanisms. A real data set is used to illustrate the application of the proposed methods.
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author2 |
陳怡如 |
author_facet |
陳怡如 Tzu-Ying Li 李紫熒 |
author |
Tzu-Ying Li 李紫熒 |
spellingShingle |
Tzu-Ying Li 李紫熒 Imputation Strategies for Incomplete Longitudinal Binary Data |
author_sort |
Tzu-Ying Li |
title |
Imputation Strategies for Incomplete Longitudinal Binary Data |
title_short |
Imputation Strategies for Incomplete Longitudinal Binary Data |
title_full |
Imputation Strategies for Incomplete Longitudinal Binary Data |
title_fullStr |
Imputation Strategies for Incomplete Longitudinal Binary Data |
title_full_unstemmed |
Imputation Strategies for Incomplete Longitudinal Binary Data |
title_sort |
imputation strategies for incomplete longitudinal binary data |
publishDate |
2011 |
url |
http://ndltd.ncl.edu.tw/handle/07067288866067263662 |
work_keys_str_mv |
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