Propensity score adjustment with several follow-ups

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Propensity score weighting adjustment is commonly used to handle unit nonresponse. When the response mechanism is nonignorable in the sense that the response probability depends directly on the study variable, a follow-up sample is commonly used to obtain an unbiased estimator using the framework of two-phase sampling, where the follow-up sample is assumed to respond completely. In practice, the follow-up sample is also subject to missingness. We consider propensity score weighting adjustment for nonignorable nonresponse when there are several follow-ups and the final follow-up sample is also subject to missingness. We propose a method-of-moments estimator for estimating parameters in the response probability. The proposed method can be implemented using the generalized method of moments and a consistent variance estimate can be obtained relatively easily. A limited simulation study shows the robustness of the proposed method. The proposed methods are applied to a Korean household survey of employment
Publisher
OXFORD UNIV PRESS
Issue Date
2014-06
Language
English
Article Type
Article
Keywords

NONIGNORABLE NONRESPONSE; MISSING DATA

Citation

BIOMETRIKA, v.101, no.2, pp.439 - 448

ISSN
0006-3444
DOI
10.1093/biomet/asu003
URI
http://hdl.handle.net/10203/212997
Appears in Collection
MA-Journal Papers(저널논문)
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