In this paper we derive asymptotic x 2 - tests for general linear hypotheses on variance components using repeated variance components models. In two examples, the two-way nested classification model and the two-way crossed classification model with interaction, we explicitly investigate the...

In einer Re-Analyse der Blue Mountains Eye Study von Cumming, Mitchell und Leeder (1997) wird gezeigt, daß diese Studie keinen Beitrag zur Klärung des Kataraktrisikos von inhalativen Kortikoiden leistet. Akzeptiert man die Schlußweisen der Studie, so ergibt sich ein diffuses und zugleich aber...

A confidence interval for the between group variance is proposed which is deduced from Wald’s exact confidence interval for the ratio of the two variance components in the one-way random effects model and the exact confidence interval for the error variance resp. an unbiased estimator of the...

Concerning the actual significance level, we investigate the commonly used combined test procedures of meta-analysis, which contain the choice of the model, in which the analysis is carried out, and the commonly used tests for treatment effect in the fixed and random effects model, and some new...

Mit Hilfe einer numerischen Meta-Analyse wird gezeigt, daß in placebokontrollierten klinischen Studien mit vergleichbarem Studiendesign und vergleichbarer Zielvariable die Behandlung der funktionellen Dyspepsie mit einem Gastroprokinetikum (Cisaprid) erfolgreicher ist als mit...

In this paper we derive asymptotic x 2 - tests for general linear hypotheses on variance components using repeated variance components models. In two examples, the two-way nested classification model and the two-way crossed classification model with interaction, we explicitly investigate the...

Concerning the actual significance level, we investigate the commonly used combined test procedures of meta-analysis, which contain the choice of the model, in which the analysis is carried out, and the commonly used tests for treatment effect in the fixed and random effects model, and some new...

A confidence interval for the between group variance is proposed which is deduced from Wald’s exact confidence interval for the ratio of the two variance components in the one-way random effects model and the exact confidence interval for the error variance resp. an unbiased estimator of the...