Publications by authors named "Pettit C"

Purpose: To examine patient demographic and clinical outcomes associated with partial articular distal femoral fractures.

Methods: An IRB-approved study was conducted on a consecutive series of patients being treated for isolated partial articular distal femoral fractures at a single academic medical center between August, 2011 and July, 2023. Patient demographics, hospital quality measures and outcomes for each patient were reviewed.

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  • The study aimed to identify the primary cause of 30-day readmissions for patients who underwent surgery for hip fractures.
  • A total of 3,032 patients were analyzed, revealing that older age, higher comorbidity scores, and more major complications during initial hospitalization were linked to increased readmission rates.
  • The leading reason for readmission was pulmonary complications, occurring in 17.1% of patients, highlighting respiratory issues as a significant concern post-surgery.
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Objectives: To determine if there is a correlation between time to surgery (TTS) and outcomes following repair of elbow fractures.

Methods: Design: Retrospective comparative study.

Setting: A single, urban hospital system.

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  • The study investigates the impact of preexisting anemia on outcomes for elderly patients with hip fractures, analyzing patient data from a single urban hospital system over a nine-year period.
  • The research included 498 patients aged 55 and older, identifying 54.8% as anemic prior to their hip fracture based on hemoglobin levels recorded 6 to 12 months earlier.
  • Results indicate that patients with chronic anemia faced significantly higher risks of 1-year mortality, major complications during hospitalization, and both 30- and 90-day readmissions post-surgery.
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Objectives: To determine which in-hospital complications after the operative treatment of hip fractures are associated with increased in-patient, 30-day, and 1-year mortality.

Design: Retrospective study.

Setting: A single academic medical center and a Level 1 Trauma Center.

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Background: In the absence of a gold-standard diagnostic modality for cellulitis, sterile inflammatory disorders may be misdiagnosed as cellulitis.

Objective: To determine the utility of skin biopsy and tissue culture for the diagnosis and management of patients admitted with a diagnosis of presumed cellulitis.

Design: Pilot single-blind parallel group randomized controlled clinical trial in 56 patients with a primary diagnosis of presumed cellulitis.

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Implantable Cardioverter Defibrillators (ICDs) are used to prevent sudden cardiac death, but they may provide unwanted shocks during end-of-life care. We aimed to study the frequency at which Do Not Resuscitate (DNR) discussions address ICD preferences in high-risk patients. A retrospective chart review was performed on patient hospitalizations with the presence of an ICD, a change in code status to DNR, and a subsequent death during that hospitalization.

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This study examines links between self-disclosure and relationship quality with close friends from adolescence to adulthood. A diverse community sample of adolescents (N = 184) participated in survey and observational measures annually from ages 13 through 29, along with their close friends and romantic partners. Random intercept cross-lagged panel modeling (RICLPM) was used to parse markers of within-individual change from age 13 to 18.

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  • Improving sustainable transportation can address urban challenges like health, congestion, climate change, and inequity, but practical and political barriers exist in implementing such interventions.
  • Our research program, CapaCITY/É, will explore successful implementation of sustainable transportation initiatives in nine Canadian cities and Victoria, Australia, focusing on bicycle networks and vehicle speed management, while developing a new implementation science framework.
  • The study has ethical approval and will share its findings through a dedicated website, presentations to various audiences, and peer-reviewed publications, enhancing knowledge and training for sustainable urban development.
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Many methods have been proposed to detect beats in photoplethysmogram (PPG) signals. We present a novel method which uses the Symmetric Projection Attractor Reconstruction (SPAR) method to generate an attractor in a two dimensional phase space from the PPG signal. We can then define a line through the origin of this phase space to be a Poincaré section, as is commonly used in dynamical systems.

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Understanding how communication processes contribute to well-functioning versus distressed couple relationships has relied largely on brief, laboratory-based conversations. Harnessing technological advancements, the present study extends the literature by capturing couples' naturalistic communication over one full day at Time 1 (T1). This study tested associations between data-driven categories of couple communication behaviors and relationship outcomes (i.

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This 20-year prospective study examined verbal aggression and intense conflict within the family of origin and between adolescents and their close friends as predictors of future verbal aggression in adult romantic relationships. A diverse community sample of 154 individuals was assessed repeatedly from age 13 to 34 years using self-, parent, peer, and romantic partner reports. As hypothesized, verbal aggression in adult romantic relationships was best predicted by both paternal verbal aggression toward mothers and by intense conflict within adolescent close friendships, with each factor contributing unique variance to explaining adult romantic verbal aggression.

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Predicting ecological responses to rapid environmental change has become one of the greatest challenges of modern biology. One of the major hurdles in forecasting these responses is accurately quantifying the thermal environments that organisms experience. The distribution of temperatures available within an organism's habitat is typically measured using data loggers called operative temperature models (OTMs) that are designed to mimic certain properties of heat exchange in the focal organism.

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  • GWAS have linked genetic risk to diseases, but understanding the cellular mechanisms is tough due to disease complexity.
  • We created a framework using human blood cells and various methods to uncover these cellular processes, conducting GWAS with data from 2,600 individuals and identifying 119 genomic loci related to immune responses.
  • We found a specific type of neutrophil linked to cardiometabolic diseases and developed a model predicting chronic kidney disease risk in type 2 diabetes patients, which helps advance patient stratification and biological understanding in genetic studies.
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Adolescent success providing satisfying support in response to a close friend's call in a caregiving task was examined as a potentially fundamental developmental competence likely to predict future social functioning, adult caregiving security, and physical health. Adolescents (86 males, 98 females; 58% White, 29% African American, 8% mixed race/ethnicity, 5% other) were followed from ages 13 to 33 (1998-2021) using multiple methods and reporters. Early caregiving success was found to predict greater self- and partner-reported caregiving security, lower negativity in adult relationships, and higher adult vagal tone.

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Urbanization alters the environment along many dimensions, including changes to structural habitat and thermal regimes. These can present challenges, but may also provide suitable habitat for certain species. Importantly, the functional implications of these habitat shifts can be assessed through the morphology-performance-fitness paradigm, though these relationships are complicated by interactions among habitat choice, other abiotic factors, and morphology across scales (i.

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Background: Determining the exact dermatologic diagnosis is difficult in the inpatient setting.

Objective: Determine whether morphologic classification rather than specific diagnosis is associated with hospital outcomes.

Methods: Retrospective single-center study.

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This 17-year prospective study applied a social-development lens to the challenge of identifying long-term predictors of adult depressive symptoms. A diverse community sample of 171 individuals was repeatedly assessed from age 13 to age 30 using self-, parent-, and peer-report methods. As hypothesized, competence in establishing close friendships beginning in adolescence had a substantial long-term predictive relation to adult depressive symptoms at ages 27-30, even after accounting for prior depressive, anxiety, and externalizing symptoms.

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This study examined development of emotional support competence within close friendships across adolescence. A sample of 184 adolescents (53% girls, 47% boys; 58% White, 29% Black, 14% other identity groups) participated in seven waves of multimethod assessments with their best friends and romantic partners from age 13 to 24. Latent change score models identified coupled predictions over time from emotional support competence to increasing friendship quality and decreasing support received from friends.

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The photoplethysmogram (PPG) signal is widely used in pulse oximeters and smartwatches. A fundamental step in analysing the PPG is the detection of heartbeats. Several PPG beat detection algorithms have been proposed, although it is not clear which performs best.

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Probability distributions of acoustic signals propagating through the near-ground atmosphere are simulated by the parabolic equation method. The simulations involve propagation at four angles relative to the mean wind, with frequencies of 100, 200, 400, and 800 Hz. The environmental representation includes realistic atmospheric refractive profiles, turbulence, and ground interactions; cases are considered with and without parametric uncertainties in the wind velocity and surface heat flux.

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Real estate markets are complex both in terms of structure and dynamics: they are both influenced by and influence almost all aspects of the economy and are equally vulnerable to the shocks experienced by the broader economy. Therefore, understanding the extent and nature of the impact of large-scale disruptive events such as natural disasters and economic financial downturns on the real estate market is crucial to policy makers and market stakeholders. In addition to anticipating and preparing for long-term effects, it has become imperative for stakeholders to monitor and manage the short-term effects as well due to the emergence of 'PropTech' and 'platform real estate'.

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