PURPOSE The Western Ontario Osteoarthritis of the Shoulder (WOOS) index is a disease-specific, patient-reported, 19-question survey that measures the quality of life among patients with osteoarthritis (OA). The purpose of this study was to validate the Danish version of WOOS for OA and fractures (FRs) using modern test theory. PATIENTS AND METHODS The study included 1,987 arthroplasties in 1,...

The linear logistic test model (LLTM) is a well-recognized psychometric model for examining the components of difficulty in cognitive tests and validating construct theories. The plausibility of the construct model, summarized in a matrix of weights, known as the Q-matrix or weight matrix, is tested by (1) comparing the fit of LLTM with the fit of the Rasch model (RM) using the likelihood ratio...

OBJECTIVES To evaluate the properties of the Pain Catastrophizing Scale (PCS) from a Rasch paradigm. METHODS A secondary analysis of 235 patients with work-related pain conditions was performed using the Rasch methodology. Unidimensionality, item fit, location independence, differential item functioning, response option structure, and linearity were evaluated for the 13-item PCS score. RESU...

BACKGROUND: We measured the psychometric properties i.e., validity, reliability, and stability of the Persian 10-item Kessler Psychological Distress Scale (K10) among older adults in Iran. METHODS: We recruited elderly (60+ years) subjects (20 per-item of the questionnaire) from various sampling units in the general population of Gorgan district, Golestan. After translation/back-translation p...

It has recently been widely argued that all consciousness is perceptual, including the conscious experience of action. This paper argues that there can be a conscious component of the experience of action that is not perceptual. The argument is based on Searle’s concept of “direction of fit” and the conditions of satisfaction of an intention. The conditions of satisfaction of an intention diffe...

February 19, 2015 Version 1.4.7 Date 2013-03-04 Author Peter Frommolt Maintainer Peter Frommolt Title Inferences for biand trifactorial trial designs Depends mvtnorm,multcomp,lattice,graphics,methods,Rcpp (>= 0.8.8) LinkingTo Rcpp Description This package makes global and multiple inferences for given biand trifactorial clinical trial designs using bootstrap method...

BACKGROUND To overcome the drawback of individual item-by-item box plots of disclosure for patient views on healthcare service quality, we propose to inspect interrelationships among items that measure a common entity. A visual diagram on the Internet is developed to provide thorough information for hospitals. METHODS We used the Rasch rating scale model to analyze the 2003 English inpatient ...

BACKGROUND The aim of the study is to develop a specific patient-reported scale of liver cirrhosis according to the Patient Reported Outcome guidelines of the Food and Drug Administration (FDA), and to examine its capacity to fill gaps in this field. METHODS A conceptual framework was developed and a preliminary item pool developed through literature review and interviews of 10 patients with ...

This paper is the first of several papers designed to demonstrate how the application of item response models in the behavioral sciences can be used to enhance the conceptual and technical toolkit of researchers and developers and to understand better the psychometric properties of psychosocial measures. The papers all use baseline data from the Behavior Change Consortium data archive. This pap...