Digital Commons Network^™

Recent Abdominal Surgery As A Risk Factor For Unfavorable Immune-Mediated Colitis Outcomes, Rohan Ahuja, Malek Shatila, Jay Shah, Cristina Natha, Varun Vemulapalli Mdi, Nitish Mittal, Jasmine Mikal Haydel, Irene Jeong-Ah Lee, Andres Caleb Urias Rivera, Carolina Colli Cruz, Bryan Schneider, Shilpa Grover, Aliyah Pabani, Anusha S Thomas, Yinghong Wang

Faculty, Staff and Student Publications

Background and aims: Risk factors for immune checkpoint inhibitor (ICI) therapy enterocolitis (IMC) have not been greatly explored. Abdominal surgery can reduce bacterial diversity, increase the presence of pathogenic bacteria, and lead to inflammatory changes. This retrospective analysis seeks to determine if a history of recent abdominal surgery in patients who receive ICI therapy affects the severity and duration of enterocolitis.

Methods: We retrospectively reviewed patients with history of abdominal surgeries, who received ICI for cancers and then developed IMC. Clinical profiles, oncology variables, and colitis-related characteristics were reported.

Results: Seven hundred sixty-five patients met the inclusion criteria. Patients median …

Evaluating Differences In Nonsyndromic Orofacial Clefts By Infant Sex: National Birth Defects Prevention Study, 1997-2011, Victoria A Salinas, Natalie P Archer, Layla R Lustri, Katherine L Ludorf, Timothy Ihongbe, Wei Yang, Eva M Williford, Marilyn L Browne, Adrian M Michalski, Lindsay A Williams, Wendy Nembhard, Eirini Nestoridi, Gary M Shaw, Andrew F Olshan, A J Agopian, National Birth Defects Prevention Study

Faculty, Staff and Student Publications

Objective: To investigate nongenetic factors that may contribute to observed differences in nonsyndromic orofacial clefts by infant sex.

Study design: Using data for 1997-2011 deliveries from the National Birth Defects Prevention Study, a case-control study, we separately examined associations between 23 maternal factors and cleft lip with or without cleft palate (CL/P) and cleft palate alone (CP) using multivariable logistic regression stratified by infant sex.

Results: We compared 2986 infants with CL/P and 1557 with CP to 11 271 control infants without birth defects. After adjusting for maternal age at conception and education, lower odds of nonsyndromic orofacial clefts were …

An Integrated Lifestyle-, Genetic- And Metabolomics-Based Prediction Model For Mild Cognitive Aging In The Hchs/Sol, Annah B Wyss, Yana Hrytsenko, Linfeng Hu, Iris J Broce, Robert C Kaplan, Wassim Tarraf, Bing Yu, Eric Boerwinkle, Qibin Qi, Myriam Fornage, Charles Decarli, Hector M González, Tamar Sofer

Faculty, Staff and Student Publications

Prediction models for cognitive aging measures have largely evaluated demographic variables and APOE carrier status in populations of European ancestry. To comprehensively assess prediction models among Hispanic/Latinos, we considered 12 models (6 predictor sets and 2 methods) for global cognitive score change (GCSC) and mild cognitive impairment (MCI) in the Study of Latinos-Investigation of Neurocognitive Aging (SOL-INCA) (N = 5856). Based on the average mean squared error (MSE) for GCSC or average area under the curve (AUC) for MCI across 100 randomly split testing and training sets, performance was similar across models, but slightly better for the following models: …

Enhancing Data Compatibility In An Evolving Landscape: Medical Cannabis And Polysubstance Use Protocols In The Phenx Toolkit, Anne Buu, Johannes Thrul, Amanda Bunting, Tamara Haegerich, Wayne Huggins, Christian Hopfer, Denise Vidot, Cataia Ives, Ryan Mcneil, Sarah Zemore, Corrie Vilsaint, Elizabeth Fallon, Christine Hill, Carol Hamilton, John Kelly

Faculty, Staff and Student Publications

Introduction: With increasing legalization of medical cannabis and prevalence of polysubstance use in the United States comes the need for standard psychometrically validated measures to study these substances' health effects in the population. The PhenX (consensus measures for Phenotypes and eXposures) Toolkit (www.phenxtoolkit.org) is a freely accessible catalog of recommended measurement protocols to promote data compatibility across studies, but this extensive catalog did not include measures in these important areas.

Methods: In 2024, a PhenX Working Group of experts followed a well-established consensus process to identify and recommend measurement protocols suitable for inclusion in studies on medical cannabis and polysubstance …

Population-Based Analysis Of Synergistic Effects Of Functional Disability And Comorbidities On Retention In Hiv Care Among People With Hiv, Modupe Olajumoke Onigbogi, Osaro Mgbere, Paul Rowan, Ruosha Li, Charles Darkoh

Faculty, Staff and Student Publications

Objective: This cross-sectional study examined how types of disability and comorbidities influence retention in care (RIC) among people with HIV (PWH) in Houston/Harris County, Texas, USA.

Methods: Data from 1142 participants in the Houston Medical Monitoring Project (2015–2021) were analyzed. Descriptive statistics, bivariate analyses, and multivariable logistic regression were used to evaluate factors associated with RIC.

Results: Approximately 74.9% of participants were retained in care. Compared to PWH without specific comorbidities, those with dyslipidemia and kidney disease had higher odds of RIC (AOR: 2.66; 95% CI: 1.40–5.03 and AOR: 14.08; 95% CI: 1.44–138.12, respectively). PWH reporting only mobility disability had …

Impact Of Early Intervention On Developmental Outcomes In Young Children With Autism In Rural Communities, Libier Burgara

IdeaFest 2026

This poster examines the impact of early intervention on developmental outcomes in young children with autism in rural communities, with a focus on care delivered through a community based rural clinic and a rural federally qualified health center. Delays in diagnosis and limited access to specialized services contribute to poorer developmental trajectories in these settings.  This project highlights the importance of early screening, timely referral, and coordinated, family centered care.  Key concepts include reducing disparities, improving access to evidence based interventions, and strengthening interdisciplinary collaboration.  Outcomes demonstrate that early, consistent intervention is associated with improved communication, social functioning, and overall …

Enhancing Surgical Safety, Sarah Moxon

IdeaFest 2026

Surgical site infections (SSIs) account for 20% of hospital-acquired infections, increasing patients’ risk of disability and mortality and raising costs for hospitals. This quality improvement project, using the Model for Evidence-Based Practice Change, aims to reduce SSIs at a rural hospital by 20% within one year. Engaging key players, proven strategies will be implemented, including preoperative nasal decolonization, reducing operating room traffic, and using an SSI risk tool. These strategies will be evaluated through electronic medical record (EMR) documentation audits, tracking door openings, nasal swab cultures, and surveys assessing the SSI risk tool’s impact on clinical decision-making.

Aquatic Invertebrate Diversity Across Ponds In The Arcata Marsh, Bree Gentil-Guijosa

IdeaFest 2026

I am collecting samples across different ponds in the Arcata Marsh to compare aquatic invertebrate biodiversity and abundance. Each pond is selected due to the ponds having different management goals and different reasons for their restoration/creation in the marsh back when the city marsh was being created. I will be presenting what invertebrate orders I found, if their presence and diversity was affected based on what pond they were collected in, and what this research can be applied to in the future.

Superintendent Accountability In High Achieving School Districts: A Qualitative Multiple Case Study In The State Of Washington, Kristin Lind Jacobs

Graduate Student Theses, Dissertations, & Professional Papers

The primary goal of a school district is to promote and support student academic achievement. Superintendents of public school districts across the United States should therefore be held accountable for student performance within their districts. Establishing a successful public school district requires interconnected relationships among the superintendent, the school board, accountability structures, and evaluation processes.

The purpose of this qualitative multiple case study was to understand how superintendent accountability, in regard to student achievement, was conducted and accomplished by school boards who believe they hold the superintendent accountable for student learning. This study focused on school boards governing high-achieving school …

Cryptic Mechanisms Of Post-Fire Nitrogen Recovery In Northern Conifer Forests, Robert Edward Heumann

Graduate Student Theses, Dissertations, & Professional Papers

In recent decades, northern conifer forests have experienced larger, more frequent and more intense wildfires. Severe, stand-replacing wildfire substantially reduces forest nitrogen (N) stocks, a critical nutrient that often limits net primary productivity on land. Continued increases in wildfire activity may exacerbate forest N limitation in the future. Yet, while research shows N stocks in northern conifer forests recover following severe wildfire, the processes that contribute to rapid increases in N during post-fire regeneration are unclear. Atmospheric deposition of N and known sources of biological N fixation cannot explain the observed post-fire N accumulations. This paradox raises the question: How …

Effectiveness Of Behavioral Cough Suppression Therapy In A Closed Enrollment Group Telehealth Delivery Model And Comparison To A Rolling Enrollment, Kinsey Louise Roberts

Graduate Student Theses, Dissertations, & Professional Papers

Background:

Refractory chronic cough (RCC) is a subtype of chronic cough (CC) that persists

despite guideline-based treatment and can negatively affect quality of life. Behavioral cough

suppression therapy (BCST), typically delivered by speech-language pathologists (SLPs), is an

effective treatment for RCC. However, access to BCST remains limited due to geographic

barriers and a shortage of trained providers. Group-based telehealth may help expand access to

treatment. This study evaluated the effectiveness of BCST delivered via telehealth using

a closed enrollment group model and compared outcomes to a rolling enrollment group model.

Methods:

In this prospective sequential cohort study 32 participants attended …

Reducing Door-To-Ekg Time In The Emergency Department, Halie Dearman

IdeaFest 2026

Delayed electrocardiogram (EKG) acquisition in emergency departments (ED) represents a preventable patient safety crisis disproportionately affecting women, Black patients, older adults, and non-English-speaking patients. Using the Iowa Model of Evidence-Based Practice, this quality improvement project addresses door-to-EKG (D2E) times exceeding the ACC/AHA 10-minute benchmark in a rural northern California ED. Three evidence-based interventions are proposed: culturally tailored community education on atypical acute coronary syndrome symptoms, a standardized nurse-driven triage EKG protocol with dedicated equipment, and institutional adoption of D2E time as a formal quality metric. Evaluation includes EHR timestamp audits, demographic disparity analysis, and longitudinal mortality review. Timely EKG acquisition …

Skin Tone Inclusive Assessment To Reduce Missed Pressure Injuries, Sheena May Viste

IdeaFest 2026

Patients with high‑melanin skin are at increased risk of developing pressure injuries and experiencing more severe progression because early signs are frequently missed. This disparity is attributed to delayed PI recognition because standard visual skin assessments are biased toward light skin and fail to identify early tissue damage (Black et al., 2023; LaFond et al., 2025). Implementing the Skin Assessment for Dark Skin (SADS) technique—use of halogen light and multisensory palpation—during assessments helps nurses identify early pressure injury indicators. The overarching goal is to reduce diagnostic delays by using tools such as Skin Assessment for Dark Skin (SADS) to support …

Beyond Words: The Horse-Human Encounter In Equine-Assisted Psychotherapy For Residential Substance Use Treatment, Leah Finch Lungren

Graduate Student Theses, Dissertations, & Professional Papers

Equine-assisted psychotherapy (EAP) has emerged as a promising experiential therapeutic intervention, yet the lived experience of adults participating in EAP within residential substance use disorder (SUD) treatment settings remains underexplored. This hermeneutic phenomenological study examined the lived experience of 12 adults who participated in EAP groups during residential SUD treatment across three treatment facilities in the United States. The primary research question was: What is the lived experience of participating in EAP for adults in residential SUD treatment? Data was collected through semi-structured interviews and analyzed through iterative hermeneutic interpretation guided by van Manen’s (1990) existential framework.

Six themes emerged …

Integrating Hippotherapy Into Interprofessional Aphasia Rehabilitation: A Feasibility Pilot Study, Bethany H. Wenger

Graduate Student Theses, Dissertations, & Professional Papers

Background and Significance: Stroke remains a leading cause of disability in the United States, affecting over 2.5 million individuals annually. Stroke-related motor and communication deficits often co-occur, increasing challenges for recovery, increasing social isolation, depression, and dependency. Hippotherapy has emerged as a novel treatment approach for neurorehabilitation; however, its application within interprofessional models for individuals with stroke-related motor and communication impairments remains underexplored. This study examines the feasibility, fidelity, and acceptability of an interprofessional intervention using hippotherapy for adults with chronic post-stroke aphasia, the purpose of which is to generate methodological guidance for future controlled trials.

Methods: A non-randomized, single-group …

Instructor Created Video: Differences In Perception Of Administrative Support In Respiratory Care, Brian Daniel Cayko

Graduate Student Theses, Dissertations, & Professional Papers

Background: The recent proliferation of online education has highlighted the need to reduce transactional distance and increase the community of inquiry presence between the instructor and students and between students. This quantitative non-experimental study examined the differences in perception of administrative support for instructor-created video (ICV) between faculty and administrators within Commission on Accreditation of Respiratory Care (CoARC) higher education programs of Respiratory Care. Methodology: The Difference in Perception of Administrative Support (DPAS) survey was utilized to collect data from 93 valid participants through a snowball sampling method. Analysis was performed using an independent samples t test and Cohen's d …

Most Effective Methods For Educating Three Population Demographics At Risk Of Large-Scale Lahars Originating From Mt. Rainier, Bodhi Merrill

IdeaFest 2026

In this study I focus on the most effective ways to communicate response plans for lahars originating from Mt. Rainier to three socioeconomic groups: residents, employees, and tourists. Wood and Soulard (2009) identified these three populations in the communities surrounding Mt. Rainier as largest and most at risk to a potential large-scale lahar. I will utilize lahar hazard maps published by the United States Geological Survey in combination with peer-reviewed journal articles focusing on the most successful methods of educating specific population demographics. This work will help guide emergency planners, management agencies, and individuals to better understand what measures still …

Ensuring Safe Soil For Indigenous Food Sovereignty: Contaminant Screening For Agroecological Health, Derek Tremaine

IdeaFest 2026

Indigenous food sovereignty is a foundational component of human and environmental health. The Rou Dalagurr Food Sovereignty Lab and Traditional Ecological Knowledges Institute at Cal Poly Humboldt (FSL) foregrounds Indigenous-led approaches to land management and oversees several sites adjacent to campus infrastructure. To ensure that food and basketry materials cultivated at the FSL do not pose a risk to human health, soil samples were collected and screened for contaminants. Heavy metals, phthalate esters, and hydrocarbons were not detected at levels that would affect human health or FSL objectives. This work demonstrates how community-engaged research can inform safe land stewardship while …

A Breath Of Fresh Dust: Health Costs Of California’S Shrinking Salton Sea, Brendan Yoder

IdeaFest 2026

Literature review investigating the adverse health effects of the continued drying of the Salton Sea in Southern California.

Holy Cows: Moo-Ving The Dial On Complex Pain Management, Mary Nickell

IdeaFest 2026

In the U.S., 8.9 million people misused opioids last year (SAMHSA, 2024). Humboldt County’s overdose rate is 6% above state and national averages (DHSS, 2021). Despite high prevalence rates, many providers lack confidence in managing acute pain for patients with Opioid Use Disorder (OUD), while nursing stigma further inhibits care (Raub & Vettese, 2017). Patients with OUD report discharging against medical advice (DAMA), even with life-threatening illnesses, due to inadequate pain and withdrawal management (Babbel et al.,2024). Nurses leaders can reduce DAMA, improve health outcomes/equity through standardized screening, dedicated pain management pathways, and mandatory annual staff training.

Reducing Postpartum Hemorrhage Through Active Management Of The Third Stage Of Labor, Delilah Pusch

IdeaFest 2026

Postpartum hemorrhage (PPH) remains a leading cause of maternal morbidity and mortality and is often preventable with timely, evidence-based care. This quality improvement project focuses on reducing PPH through active management of the third stage of labor and use of standardized hemorrhage protocols. Guided by the Johns Hopkins Nursing Evidence-Based Practice model, current evidence supports interventions such as oxytocin administration, controlled cord traction, and uterine massage. Planned strategies include staff education, protocol implementation, and improved clinical readiness. Expected outcomes include reduced PPH rates, fewer transfusions, and improved maternal safety.

Take Me Out Of The Ballgame: Recovery From Pitching Injuries In The Mlb, Madilyn Shinn

IdeaFest 2026

My project looks into studies focused on Major league baseball, specifically pitchers who have obtained a UCL injury. I took data from several different studies to draw a conclusion that pitchers who recover from UCL surgery can return to the MLB.

Bridging The Gap In Prediabetes Care: Improving Outcomes Among Socioeconomically Disadvantaged Adults, Becca Gilbride

IdeaFest 2026

Prediabetes disproportionately affects low-income adults, yet many remain unaware or untreated due to limited time and resources in community health care settings. Addressing prediabetes is a critical window of opportunity to prevent type 2 diabetes and is essential to reducing disparities and long-term complications. Guided by the Evidence-Based Practice Change model, this project implements multi-level interventions, including motivational interviewing, community education, and clinical decision support tools. Outcomes focus on improving self-efficacy and engagement and achieving at least a 0.5% A1C reduction within one year. These improvements are expected to enhance quality of life, lower the risk of serious complications, and …

Improving Early Mobility And Family Engagement For Patients In A Rural Intensive Care Unit, Erin Sullivan

IdeaFest 2026

Early mobility and family engagement interventions for mechanically ventilated patients in the intensive care unit are key components of the ICU liberation bundle (A-F). It strives to reduce patient complications, such as delirium, PTSD, progressive weakness, lengthy hospital stays, and mortality. This quality improvement project in a rural ICU employs a multidisciplinary approach to expanding early mobility interventions, educating the care team, patients, and families, addressing barriers, encouraging family participation, and developing an early mobility standard of care protocol. Key outcomes include consistent use of ICU liberation documentation tools by caregivers, enhanced family participation and education, and increased mobilization of …

An Exploratory Analysis Of The Role Of Sex In Load Carriage, Rachel E. Perez, Dustin R. Slivka, Brent C. Ruby

Graduate Student Theses, Dissertations, & Professional Papers

Axially loaded weight may impose a metabolic demand equivalent to that of fat mass (FM) during load carriage. Males (M) typically have a lower body fat percentage than females (F), resulting in metabolic demand differences during load carriage that may be mitigated by accounting for FM in pack loads. PURPOSE: To determine whether normalizing pack load to FM equalizes metabolic cost across sexes during load carriage. METHODS: Twenty-eight participants (14M, 23 ± 5 y, 1.81 ± 0.07 m, 78.7 ± 10.0 kg, 12.7 ± 5.4% body fat, VO₂peak 4.18 ± 0.54 L·min^-1; 14F, 22 ± 4 …

Modern Consumption: Digital Media And Food Intake In Young Adults, Norah Mieloch

IdeaFest 2026

This poster explores how digital media influences food engagement in terms of what we eat and why, how hormonal hunger and satiety cues may be impacted by screens during mealtime, how media content targets certain food behaviors (intentional and not), and meal appreciation. In learning about the impacts of digital media consumption alongside food consumption, the audience will understand the effects on their health and how screens change their brain chemistry - hopefully allowing them to make an educated decision of whether or not to engage in media while eating.

2025 World Aids Remembrance, Paul Michael Atienza

IdeaFest 2026

The 2025 World AIDS Remembrance was a two-week program of events and displays that brought awareness and learning opportunities about the ongoing HIV/AIDS crisis around the world. It was one of several Diversity, Equity, Inclusion, and Accessibility (DEIA) Grant Program recipients for the 2025-2026 academic year. Lead organizer, Dr. Paul Michael L. Atienza, collaborated with on and off campus partners to provide a variety presentations from public health professionals, community organizers, film screenings, and the Eureka Sisters of Perpetual Indulgence. Over 100 community members participated and experienced the events.

Improving Diabetes Outcomes In Native American Populations, Meagan Shadle

IdeaFest 2026

Despite organized efforts, Humboldt County tribes have had little improvement regarding diabetes outcomes when compared to county and state data averages. These trends suggest that regardless of advancements in therapy, monitoring and prevention there is still an issue of equity among ethnic groups in Humboldt County. This data highlights the need for an integrative and culturally centered, community based strategy that aims to improve the health outcomes and longevity of the Indigenous peoples within this shared land. By providing individualized care plans and disease process management with community engagement programs focused on relevant and accessible diet and lifestyle education there …

Fad Diets Or Bad Diets?, Walker Dorris

IdeaFest 2026

A literature review on fad diets and their effectiveness and sustainability with regard to weight loss and overall health.

An Ecology Of Small Sorrows: Small Animals And The Fragile Ecosystems Inside Us, Haley H. Yarborough

Graduate Student Theses, Dissertations, & Professional Papers

In An Ecology of Small Sorrows, Haley Yarborough uses a series of personal essays to explore how encounters with small life shape her understanding of herself. This collection is inspired by many talented writers — Lucy Cooke’s insights into animal biology, Andy Weir’s humor and knack for explaining complicated topics, Ben Goldfarb’s insightful exploration of the overlooked, and Sabrina Embler’s beautiful, poetic reflections on the natural world.

These essays touch on how small animals serve as mirrors for us, through our experiences with illness, loss, insecurity, and survival. While a lot of modern media emphasize larger, charismatic species to tell …