BACKGROUND The SF-36 physical functioning scale (PF-10) and the Health Assessment Questionnaire disability index (HAQ-DI) are the most frequently used instruments for measuring self-reported physical function in rheumatoid arthritis (RA). The objective of this study was to develop a crosswalk between scores on the PF-10 and HAQ-DI in RA. METHODS Item response theory (IRT) methods were used to...

Previous studies have shown that roundabouts - especially multilane roundabouts - pose accessibility challenges to pedestrians with vision impairments, in part due to a lack of yielding by drivers, especially on multilane roundabout exit legs. In this study, three different treatments are assessed in terms of their propensity for increasing driver yielding rate using a driving simulator. These ...

Urban intersections are the most dangerous parts of a blind or visually impaired pedestrian's travel. A prerequisite for safely crossing an intersection is entering the crosswalk in the right direction and avoiding the danger of straying outside the crosswalk. This paper presents a proof of concept system that seeks to provide such alignment information. The system consists of a standard mobile...

Setting-specific outcome measures present a major barrier to monitoring patient progress across the continuum of care. This study demonstrated Rasch analysis for the creation of a crosswalk between the Functional Independence Measure (FIM), which is used in inpatient rehabilitation, and the Minimum Data Set (MDS), which is used in skilled nursing facilities. To create the crosswalk, we used dat...

This study evaluated drivers' behavior in yielding the right-of-way to sighted and blind pedestrians who stood at different stopping distances from the crosswalk lines at entry and exit lanes at two different roundabouts. The findings demonstrate that drivers' willingness to yield to pedestrians is affected by whether they are attempting to cross at the entry or exit to the roundabout and, unde...

In this article, we develop a gender-specific crosswalk based on dual-coded Current Population Survey data to bridge the change in the census occupational coding system that occurred in 2000 and use it to provide the first analysis of the trends in occupational segregation by sex for the 1970-2009 period based on a consistent set of occupational codes and data sources. We show that our gender-s...

Increasingly, cities worldwide are striving for green travel and slow traffic, vigorously developing people-oriented urban pedestrian traffic with sustainability has become a fixture in recent discourse. This paper comprehensively considers the sidewalk’s facilities environment status of flow; divides road system (UPRS) into five subsystems around underpass, overpass, crosswalk, sidewalk, cross...

BACKGROUND Accurate, adequate, and timely food and nutrition information is necessary in order to monitor changes in the US food supply and assess their impact on individual dietary intake. OBJECTIVE Our aim was to develop an approach that links time-specific purchase and consumption data to provide updated, market representative nutrient information. METHODS We utilized household purchase ...

Performance profiling of applications is often a challenging task. One problem in the analysis is that applications often spend significant amount of their time in the operating system. As a result, conventional user-level profilers can, at best, trace the performance bottleneck to a particular system call. This information is often insufficient for the programmer to deal with the performance p...

In this paper, we propose a method to summarize an egocentric moving video (a video recorded by a moving wearable camera) for generating a walking route guidance video. To summarize an egocentric video, we analyze it by applying pedestrian crosswalk detection as well as ego-motion classification, and estimate an importance score of each section of the given video. Based on the estimated importa...