In longitudinal studies each subject is observed at several di!erent times. Longitudinal studies are rarely balanced and complete due to occurrence of missing data. Little proposed pattern-mixture models for the analysis of incomplete multivariate normal data. Later, Little proposed an approach to m
A test of missing completely at random for longitudinal data with missing observations
โ Scribed by Taesung Park; Seung-Yeoun Lee
- Publisher
- John Wiley and Sons
- Year
- 1997
- Tongue
- English
- Weight
- 115 KB
- Volume
- 16
- Category
- Article
- ISSN
- 0277-6715
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โฆ Synopsis
Liang and Zeger proposed a generalized estimating equations approach to the analysis of longitudinal data. Their models assume that missing observations are missing completely at random in the sense of Rubin. However, when this assumption does not hold, their analysis may yield biased results. In this paper, we develop a simple and practical procedure for testing this assumption. The proposed procedure is related to that of Park and Davis.
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