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Title: | Generalized reliability estimation using repeated measurements | Authors: | LAENEN, Annouschka VANGENEUGDEN, Tony GEYS, Helena MOLENBERGHS, Geert |
Issue Date: | 2006 | Publisher: | BRITISH PSYCHOLOGICAL SOC | Source: | BRITISH JOURNAL OF MATHEMATICAL & STATISTICAL PSYCHOLOGY, 59. p. 113-131 | Abstract: | Reliability can be studied in a generalized way using repeated measurements. Linear mixed models are used to derive generalized test-retest reliability measures. The method allows for repeated measures with a different mean structure due to correction for covariate effects. Furthermore, different variance-covariance structures between measurements can be implemented. When the variance structure reduces to a random intercept (compound symmetry), classical methods are recovered. With more complex variance structures (e.g. including random slopes of time and/or serial correlation), time-dependent reliability functions are obtained. The effect of time lag between measurements on reliability estimates can be evaluated. The methodology is applied to a psychiatric scale for schizophrenia. | Notes: | Hasselt Univ, Ctr Stat, B-3590 Diepenbeek, Belgium. Tibotec, Mechelen, Belgium.Laenen, A, Hasselt Univ, Ctr Stat, Bldg D, B-3590 Diepenbeek, Belgium.annouschka.laenen@uhasselt.be | Document URI: | http://hdl.handle.net/1942/1959 | ISSN: | 0007-1102 | e-ISSN: | 2044-8317 | DOI: | 10.1348/000711005X66068 | ISI #: | 000237975000007 | Rights: | Copyright © The British Psychological Society | Category: | A1 | Type: | Journal Contribution | Validations: | ecoom 2007 |
Appears in Collections: | Research publications |
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