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http://hdl.handle.net/1942/385
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DC Field | Value | Language |
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dc.contributor.author | Kenward, Michael G. | - |
dc.contributor.author | GOETGHEBEUR, Els | - |
dc.contributor.author | MOLENBERGHS, Geert | - |
dc.date.accessioned | 2004-10-26T07:24:10Z | - |
dc.date.available | 2004-10-26T07:24:10Z | - |
dc.date.issued | 2001 | - |
dc.identifier.citation | Statistical Modelling, 1(1). p. 31-48 | - |
dc.identifier.issn | 1471-082X | - |
dc.identifier.uri | http://hdl.handle.net/1942/385 | - |
dc.description.abstract | Classical inferential procedures induce conclusions from a set of data to a population of interest, accounting for the imprecision resulting from the stochastic component of the model. This is usually done by means of precision or interval estimates. Less attention is devoted to the uncertainty arising from (unplanned) incompleteness in the data, even though the majority of clinical studies suffer from incomplete follow-up. Through the choice of an identifiable model for non-ignorable non-response, one narrows the possible data generating mechanisms to the point where inference only suffers from imprecision. Some proposals have been made for assessment of sensitivity to these modelling assumptions; many are based on fitting several plausible but competing models. We propose a formal approach which identifies and incorporates both sources of uncertainty in inference: imprecision due to finite sampling and ignorance due to incompleteness. The developments focus on contingency tables, and are illustrated using data from a HIV prevalence study and data from a psychiatric study. | - |
dc.description.sponsorship | We gratefully acknowledge support from Fonds Wetenschappelijk Onderzoek-Vlaanderen Research Project G.0002.98 ‘Sensitivity Analysis for Incomplete and Coarse Data’. We wish to thank two anonymous reviewers for very helpful and constructive comments. | - |
dc.description.tableofcontents | Classical inferential procedures induce conclusions from a set of data to a population of interest, accounting for the imprecision resulting from the stochastic component of the model. This is usually done by means of precision or interval estimates. Less attention is devoted to the uncertainty arising from (unplanned) incompleteness in the data, even though the majority of clinical studies suffer from incomplete follow-up. Through the choice of an identifiable model for non-ignorable non-response, one narrows the possible data generating mechanisms to the point where inference only suffers from imprecision. Some proposals have been made for assessment of sensitivity to these modelling assumptions; many are based on fitting several plausible but competing models. We propose a formal approach which identifies and incorporates both sources of uncertainty in inference: imprecision due to finite sampling and ignorance due to incompleteness. The developments focus on contingency tables, and are illustrated using data from a HIV prevalence study and data from a psychiatric study. | - |
dc.language.iso | en | - |
dc.rights | (C) Arnold 2001 | - |
dc.subject | Missing data | - |
dc.subject | Longitudinal data | - |
dc.subject | Categorical data | - |
dc.subject.other | contingency table, missing at random, overspecified model, saturated model | - |
dc.title | Sensitivity analysis for incomplete categorical data | - |
dc.type | Journal Contribution | - |
dc.identifier.epage | 48 | - |
dc.identifier.issue | 1 | - |
dc.identifier.spage | 31 | - |
dc.identifier.volume | 1 | - |
local.bibliographicCitation.jcat | A1 | - |
local.type.refereed | Refereed | - |
local.type.specified | Article | - |
dc.bibliographicCitation.oldjcat | A1 | - |
dc.identifier.doi | 10.1177/1471082X0100100104 | - |
item.contributor | Kenward, Michael G. | - |
item.contributor | GOETGHEBEUR, Els | - |
item.contributor | MOLENBERGHS, Geert | - |
item.accessRights | Restricted Access | - |
item.fullcitation | Kenward, Michael G.; GOETGHEBEUR, Els & MOLENBERGHS, Geert (2001) Sensitivity analysis for incomplete categorical data. In: Statistical Modelling, 1(1). p. 31-48. | - |
item.fulltext | With Fulltext | - |
crisitem.journal.issn | 1471-082X | - |
crisitem.journal.eissn | 1477-0342 | - |
Appears in Collections: | Research publications |
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kenward2016.pdf Restricted Access | Published version | 316.32 kB | Adobe PDF | View/Open Request a copy |
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