OBJECTIVE To provide comparisons and a worked example of item- and scale-level evaluations based on three psychometric methods used in patient-reported outcome development-classical test theory (CTT), item response theory (IRT), and Rasch measurement theory (RMT)-in an analysis of the National Eye Institute Visual Functioning Questionnaire (VFQ-25). METHODS Baseline VFQ-25 data from 240 parti...

NIMI (National Internet Measurement Infrastructure) is a software system for building network measurement infrastructures. Its design emphasizes (i) large-scale infrastructures composed from diversely-administered hosts, rather than infrastructures controlled by a single entity, and (ii) facilitating diverse types of measurements by diverse parties, some of whom are allowed richer access to cer...

Measurement of quantities is a core skill which must be inherent in all graduates from Quantity Surveying courses. Many students find this subject difficult to grasp, and the learning experience can be problematic especially in the first semester of first year. This is not unique to measurement as in many cases first year students are in the process of adapting to a new stage in their life, alo...

OBJECTIVES Heightened body awareness can be adaptive and maladaptive. Improving body awareness has been suggested as an approach for treating patients with conditions such as chronic pain, obesity and post-traumatic stress disorder. We assessed the psychometric quality of selected self-report measures and examined their items for underlying definitions of the construct. DATA SOURCES PubMed, P...

background and objectives: patient satisfaction is a key feature of quality improvement in modern health care systems. the focus of patient satisfaction studies has been on inpatient satisfaction measurement. as such, valid and reliable instruments for assessment of outpatient satisfaction are lacking in the field. this study aimed to develop and validate a brief scale to facilitate assessing o...

BACKGROUND The quality standards of the Dutch Society of Intensive Care require monitoring of the satisfaction of patient's relatives with respect to care. Currently, no suitable instrument is available in the Netherlands to measure this. This study describes the development and psychometric evaluation of the questionnaire-based Consumer Quality Index 'Relatives in Intensive Care Unit' (CQI 'R-...

BACKGROUND The Ankle Osteoarthritis Scale (AOS) is a self-administered score specific for ankle osteoarthritis (OA) with excellent reliability and strong construct and criterion validity. Many recent randomized multicentre trials have used the AOS, and the involvement of the French-speaking population is limited by the absence of a French version. Our goal was to develop a French version and va...

INTRODUCTION Menopause is a natural event in a woman's life which affects her general health and quality of life. However, currently there is no Persian instrument for measuring health status during this period. Therefore, the present study was performed to assess the validity and reliability of the Persian version of the Menopausal Health Questionnaire in Iran. METHODS The questionnaire was ...

BACKGROUND Teaching and assessment of communication skills have become essential in medical education. The Objective Structured Clinical Examination (OSCE) has been found as an appropriate means to assess communication skills within medical education. Studies have demonstrated the importance of a valid assessment of medical students' communication skills. Yet, the validity of the performance sc...

OBJECTIVE To develop and validate INCLEN Diagnostic Tool for Attention Deficit Hyperactivity Disorder (INDT-ADHD). DESIGN Diagnostic test evaluation by cross sectional design. SETTING Tertiary care pediatric centers. PARTICIPANTS 156 children aged 65-117 months. METHODS After randomization, INDT-ADHD and Connors 3 Parent Rating Scale (C3PS) were administered, followed by an expert evalu...