BACKGROUND Activity trackers can potentially stimulate users to increase their physical activity behavior. The aim of this study was to examine the reliability and validity of ten consumer activity trackers for measuring step count in both laboratory and free-living conditions. METHOD Healthy adult volunteers (n = 33) walked twice on a treadmill (4.8 km/h) for 30 min while wearing ten differe...

BACKGROUND With the implementation of competency-based curricula, Objective Structured Assessment of Technical Skills (OSATS) increasingly is being used for the assessment of operative skills. Although evidence for its usefulness has been demonstrated in experimental study designs, data supporting OSATS application in the operating room are limited. This study evaluates the validity and reliabi...

OBJECTIVE This study was conducted to determine the interrater reliability and predictive validity of a set of diagnostic criteria for the prodrome of the first episode of schizophrenic psychosis when based on the Structured Interview for Prodromal Syndromes. METHOD The subjects were patients referred for evaluation because of a suspected schizophrenia prodromal syndrome. For the reliability ...

OBJECTIVE To examine the test-retest reliability, convergent validity, and predictive validity of the comprehensive activities of daily living (CADL) measure in patients with stroke. DESIGN A repeated-assessments design, 10-14 days apart, was used to examine test-retest reliability in 70 patients. In the validity study, a further 168 patients were assessed at 6 months and 1 year after stroke....

The UCSD Performance-based Skills Assessment (UPSA) is a measure of Functional Capacity and assesses skills involved in community tasks. It has good psychometrics properties, and is currently recommended as a co-primary assessment of cognition in the MATRICS Project. To our knowledge so far, there are no studies in western developing countries concerning Functional Capacity in Schizophrenia. Th...

objective: assessment of social skills is a necessary requirement to develop and evaluate the effectiveness of cognitive and behavioral interventions. this paper reports the cultural adaptation and psychometric properties of the farsi version of the social skills rating system-secondary students form (ssrs-ss) questionnaire (gresham and elliot, 1990), in a normative sample of secondary school s...