Ryan W Walters

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BACKGROUND There is conflicting data regarding the mortality benefit of statins in patients with heart failure. The objectives of our study were to determine whether statin therapy is associated with decreased all-cause mortality and to assess the effect of incremental duration of therapy. METHODS We studied 10,510 consecutive patients from the Veterans(More)
OBJECTIVE Aggregated N-of-1 randomized controlled trials (RCTs) combined with multilevel modeling represent a methodological advancement that may help bridge science and practice in pediatric psychology. The purpose of this article is to offer a primer for pediatric psychologists interested in conducting aggregated N-of-1 RCTs. METHODS An overview of(More)
OBJECTIVE  To understand the predictors and consequences of adolescent moderate-to-vigorous physical activity (MVPA) and sedentary behavior in nearly real-time. METHODS  Participants were 26 adolescents (Mage = 15.96, SD = 1.56) who provided 80 self-reports of subjective states and continuous objective reports of MVPA and sedentary behavior over 20 days.(More)
Ordering and incomplete factorization issues for matrices arising from the TRANAIR CFD code. A locally reened rectangular grid nite element method: Application to computational uid dynamics and computational physics. A comparison of domain decomposition techniques for elliptic partial diierential equations and their parallel implementation. Inexact Newton's(More)
Physical activity shows promise for protection against cognitive decline in older adults with and without Alzheimer's disease (AD). To better understand barriers to adoption of physical activity in this population, a clear understanding of daily and weekly activity patterns is needed. Most accelerometry studies report average physical activity over an(More)
OBJECTIVE We sought to determine whether the utilization of a respiratory therapist (RT) driven mechanical ventilation weaning protocol is associated with improvement in clinical outcomes in subjects with simple versus difficult weaning. METHODS This was a retrospective analysis of prospectively collected data obtained during a quality improvement(More)
Purpose The Kansas Department on Aging (KDOA) and the Department of Social & Rehabilitative Services (SRS) contracted with the University of Kansas School of Social Welfare's Office of Aging & Long Term Care (OALTC) to conduct the " Connecting Older Kansans with Community Mental Health Services: A Pilot Study ". The purpose of this three year study is to(More)
BACKGROUND The utilization of checklists, bundles, and protocols attempts to provide standardization in the delivery of patient care. Despite important progress obtained in the prevention of hospital-acquired infections, the daily management of mechanical ventilation is still prone to heterogeneity, depending on the number of providers manipulating the(More)
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