PURPOSE To develop and determine the reliability and validity of a vision-specific quality-of-life instrument (TL-VSQOL) designed to assess the impact of distance and near vision impairment in adults living in Timor-Leste. METHODS A vision-specific quality-of-life questionnaire was developed, piloted, and administered to 704 Timorese aged >or=40 years during a population-based eye health rapi...

BACKGROUND The Dundee Ready Educational Environment Measure (DREEM) is widely used to assess the educational environment in health professional education programs. A number of authors have identified issues with the psychometric properties of the DREEM. Part 1 of this series of papers presented the quantitative data obtained from the DREEM in the context of an Australian osteopathy program. The...

BACKGROUND DEMQOL and DEMQOL-Proxy are widely used patient reported outcome measures (PROMs) of health related quality of life in people with dementia (PWD). Growing interest in routine use of PROMs in health care calls for more robust instruments that are potentially fit for reliable and valid comparisons at the micro-level (patients) and meso-level (clinics, hospitals, care homes). METHODS ...

BACKGROUND Having psychometrically strong disability measures that minimize response burden is important in assessing of older adults. METHODS Using the original 48 items from the Late-Life Function and Disability Instrument and newly developed items, a 158-item Activity Limitation and a 62-item Participation Restriction item pool were developed. The item pools were administered to a convenie...

multiple-choice questions are commonly employed for testing languageknowledge. however, since in the recently proposed systematic approach toitem writing, using various item formats is desirable and there is very fewresearches on the possibility of using translation items for giving variety toitems on a test. the present study aims at comparing reliability and itemdifficulty of translation and ...

OBJECTIVE To develop a hierarchical scale that measures activity limitations in climbing stairs in patients with lower-extremity disorders living at home. DESIGN Cross-sectional study with Mokken scale analysis of 15 dichotomous items. SETTING Outpatient clinics of secondary and tertiary care centers. PARTICIPANTS Patients (N=759; mean age +/- standard deviation, 59.8+/-15.0y; 48% men) li...

Although specific methodologies vary across the numerous examples of person-fit statistics, in general, they work by measuring the extent to which an individual’s observed response vector is consistent with expectation as defined in the context of some statistical model. Response patterns that are inconsistent with expectation are said to be aberrant, while responses that are consistent with ex...