PURPOSE To analyze the validity of the Hospital Anxiety and Depression Scale (HADS) among Chinese cataract population. METHODS A total of 275 participants with unilateral or bilateral cataract were recruited to complete the Chinese version of HADS. The patients' demographic and ophthalmic characteristics were documented. Rasch analysis was conducted to examine the model fit statistics, the th...

Aufgrund der rasch zunehmenden Komplexität eingebetteter Systeme ergab sich die Notwendigkeit, die Abstraktionsebene im Systementwurf anzuheben. Es wurde die elektronische Systemebene geschaffen, auf der die Systembeschreibungssprache SystemC und die Konzepte zur Modellierung auf Transaktionsebene (engl. Transaction Level Modeling, TLM) große Bedeutung erlangten. TLM-Modelle, die in SystemC ges...

Measuring passenger satisfaction presents several difficulties since customer satisfaction in the public transport sector is subject to different conditions which are different than those that affect other sectors. In this work, a strategy based on Rasch analysis and the Analysis of Means (ANOM) is proposed. This study is based on the idea that the Rasch rating scale model gives ‘sufficient sta...

A Rasch-type loneliness scale was administered in two separate studies. The fwd involved a sample of 708 unemployed, occupationally disabled and employed men and women. The second involved a sample of 412 married, unmarried, divorced and widowed women and men. The efects of being with or without a partner, the respondents' evaluation of the supportive function of the partner, and different type...

The basic theory of Rasch measurement applies to situations where a person has a certain level of a trait being investigated, and this level of ability is what determines (to within a measurement error) how well the person does on each item in a test. This paper responds to frequent suggestions from colleagues that the use of Rasch measurement would be profitable in analysing a set of data on s...

The authors responded appropriately to the criticisms and suggestions. Moreover, the methodological part of the manuscript has improved significantly and the results are more clear-cut now. I therefore recommend publication of this manuscript. Statistical review: Yes, and I have assessed the statistics in my report.

The Rasch model is known in particular for its properties of parameter separability and specific objectivity. The extent to which this property is attained depends on the magnitude of the discrepancy between the data and the model. The use of reliable model fit tests which can detect model violations is therefore essential before a psychological test is used and inferences based on the requirem...

Título: Validación de la adaptación española del School Attitude Assessment Survey-Revised mediante el modelo de Rasch multidimensional. Resumen: El School Attitude Assessment Survey-Revised (SAAS-R) fue desarrollado por McCoach y Siegle (2003b) y validado en España por Miñano, Castejón, y Gilar (2014) a través del Modelo Clásico de Test. El objetivo del presente estudio es validar el SAAS-R a ...

The usefulness of joint and conditional maximum-likelihood is considered for the Rasch model under realistic testing conditions in which the number of examinees is very large and the number is items is relatively large. Conditions for consistency and asymptotic normality are explored, effects of model error are investigated, measures of prediction are estimated, and generalized residuals are de...