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Two alternative user interface designs were subjected to user testing to measure user performance in a database query task. User performance was also estimated heuristically in three different ways and by use of formal GOMS modelling. The estimated values for absolute user performance had very high variability, but estimates of the relative advantage of the(More)
PURPOSE Matrix metalloproteinase-9 (MMP-9) is a potent endopeptidase with activity against both collagens and elastin. Expression of MMP-9 is elevated in vascular disease, and in particular within aneurysm tissues. This study tested the hypothesis that the functionally more active T allele of the MMP9 C-1562T polymorphism may be overrepresented in patients(More)
OBJECTIVES The reported prevalence of occupational allergy to natural rubber latex is 8% to 17%, and that of latex-induced occupational asthma is 2.5% to 6%. Conversion of medical facilities to "latex-safe" can reduce employee sensitization, impairment, and disability. The purpose of this study was to determine the cost of a latex-safe approach, compared(More)
PRIMARY OBJECTIVES (1) To examine survivors with traumatic brain injury (TBI) for symptoms of avoidance and intrusion, two dimensions of post-traumatic stress (PTS) at 6 and 12 months post-injury. (2) To identify risk factors associated with these symptoms. RESEARCH DESIGN Prospective follow-up study. METHODS AND PROCEDURES Georgia and North Carolina(More)
This study examined the prescription drug costs of Medicare beneficiaries participating in a Medicaid home- and community-based services (HCBS) program and discussed possible implications of providing a prescription drug benefit under Medicare. The study examined Medicaid pharmaceutical claims data using two random samples (n=766) of dually eligible(More)
OBJECTIVES The authors present preliminary results on health-related outcomes of a randomized trial of telehealth interventions designed to reduce the incidence of secondary conditions among people with mobility impairment resulting from spinal cord injury (SCI). METHODS Patients with spinal cord injuries were recruited during their initial stay at a(More)
BACKGROUND Smoking is the single most preventable cause of premature mortality in the United States. In 13 double-blind, controlled trials, the nicotine transdermal patch has been demonstrated to be an effective aid to quitting smoking, even after 6 months of follow-up. Because physicians and payers may consider the cost of the patch to be prohibitive, we(More)
OBJECTIVES To examine the incremental effect of dementia-related problem behaviors (DRPBs) on the risk of and time to nursing home placement (NHP) in poor, frail, demented older people. DESIGN Client assessments were reviewed retrospectively for clinical, functional, and cognitive information, particularly the presence of DRPBs and the time during(More)
This study reports on secondary data, depression, fatigue and health-related quality of life (HRQOL), collected on people with advanced multiple sclerosis (MS) as part of a larger study of the impact of a telerehabilitation intervention on people with severe mobility impairment. People with spinal cord injuries (SCIs) (n=111) and the prevention of pressure(More)