Diane M Dolezel

Dr. Diane M Dolezel

orcid

Research Focus & Metrics

Academic Career Length

10Years (2017-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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22 August 2019 in Brain Sciences
Verified
Journal Article
Open access
PDF file
Lawrence FultonLawrence Fulton
Lawrence Fulton
DDDiane M Dolezel
Diane M Dolezel
JHJordan Harrop
Jordan Harrop
YYYan Yan
Yan Yan
CFChris Fulton
Chris Fulton
Background. Alzheimer’s is a disease for which there is no cure. Diagnosing Alzheimer’s disease (AD) early facilitates family planning and cost control. The purpose of this study is to predict the presence of AD using socio-demographic, clinical, and magnetic resonance imaging (MRI) data. Early detection of AD enables family planning and may reduce costs by delaying long-term care. Accurate, non-imagery methods also reduce patient costs. The Open Access Series of Imaging Studies (OASIS-1) cross-sectional MRI data were analyzed. A gradient boosted machine (GBM) predicted the presence of AD as a function of gender, age, education, socioeconomic status (SES), and a mini-mental state exam (MMSE). A residual network with 50 layers (ResNet-50) predicted the clinical dementia rating (CDR) presence and severity from MRI’s (multi-class classification). The GBM achieved a mean 91.3% prediction accuracy (10-fold stratified cross validation) for dichotomous CDR using socio-demographic and MMSE variables. MMSE was the most important feature. ResNet-50 using image generation techniques based on an 80% training set resulted in 98.99% three class prediction accuracy on 4139 images (20% validation set) at Epoch 133 and nearly perfect multi-class predication accuracy on the training set (99.34%). Machine learning methods classify AD with high accuracy. GBM models may help provide initial detection based on non-imagery analysis, while ResNet-50 network models might help identify AD patients automatically prior to provider review.

20 November 2018 in Journal of American College Health
Verified
Journal Article
Closed access
DDDiane M Dolezel
Diane M Dolezel
RSRam Shanmugam
Ram Shanmugam
EMEileen E. Morrison
Eileen E. Morrison
Objective: To examine the health literacy of college students. Participants: A convenience sample of 245 graduate and undergraduate college students. Methods: During February–April of 2018 participants completed the Short Test of Functional Health Literacy which assessed literacy on two passages describing a thyroid scan, and basic healthcare insurance information. Results: Most college students displayed adequate health literacy (99.2%). The ANOVA analyses revealed college classification was the most significant predictor, followed by ethnicity, sex, and primary language. Age was significantly related to health literacy, when holding college classification constant. Interestingly, college major, healthcare work experience, or having health care credentials were not predictors of health literacy. Conclusion: This group of college students had adequate health literacy skills. However, the results of this study revealed demographic disparities that suggest further study.

17 July 2023 in Healthcare
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Journal Article
Open access
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Jose BetancourtJose Betancourt
Jose Betancourt
DDDiane M Dolezel
Diane M Dolezel
RSRamalingam Shanmugam
Ramalingam Shanmugam
GPGerardo Pacheco
Gerardo Pacheco
PGPaula Stigler Granados
Paula Stigler Granados
Lawrence FultonLawrence Fulton
Lawrence Fulton
Chronic diseases affect a disproportionate number of United States (US) veterans, causing significant long-term health issues and affecting entitlement spending. This longitudinal study examined the health status of US veterans as compared to non-veterans pre- and post-COVID-19, utilizing the annual Center for Disease Control and Prevention (CDC) behavioral risk factor surveillance system (BRFSS) survey data. Age-adjusted descriptive point estimates were generated independently for 2003 through 2021, while complex weighted panel data were generated from 2011 and onward. General linear modeling revealed that the average US veteran reports a higher prevalence of disease conditions except for mental health disorders when compared to a non-veteran. These findings were consistent with both pre- and post-COVID-19; however, both groups reported a higher prevalence of mental health issues during the pandemic years. The findings suggest that there have been no improvements in reducing veteran comorbidities to non-veteran levels and that COVID-19 adversely affected the mental health of both populations.

18 October 2023 in Healthcare
Verified
Journal Article
Open access
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Bradley BeauvaisBradley Beauvais
Bradley Beauvais
DDDiane M Dolezel
Diane M Dolezel
ZRZo Ramamonjiarivelo
Zo Ramamonjiarivelo
Hospitals are perpetually challenged by concurrently improving the quality of healthcare and maintaining financial solvency. Both issues are among the top concerns for hospital executives across the United States, yet some have questioned if the efforts to enhance quality are financially sustainable. Thus, the aim of this study is to examine if efforts to improve quality in the hospital setting have a corresponding association with hospital profitability. Recent and directly relevant research on this topic is very limited, leaving practitioners uncertain about the wisdom of their investments in interventions which enhance quality and patient safety. We assessed if eight different quality measures were associated with our targeted measure of hospital profitability: the net patient revenue per adjusted discharge. Using multivariate regression, we found that improving quality was significantly associated with our targeted measure of hospital profitability: the net patient revenue per adjusted discharge. Significant findings were reported for seven of eight quality measures tested, including the HCAHPS Summary Star Rating (p < 0.001), Hospital Compare Overall Rating (p < 0.001), All-Cause Hospital-Wide Readmission Rate (p < 0.01), Total Performance Score (p < 0.001), Safety Domain Score (p < 0.01), Person and Community Engagement Domain Score (p < 0.001), and the Efficiency and Cost Reduction Score (p < 0.001). Failing to address quality and patient safety issues is costly for US hospitals. We believe our findings support the premise that increased attention to the quality of care delivered as well as patients’ perceptions of care may allow hospitals to accentuate profitability and advance a hospital’s financial position.

1 October 2023 in Health Promotion International
Verified
Journal Article
Closed access
DDDiane M Dolezel
Diane M Dolezel
BHBarbara Hewitt
Barbara Hewitt
Despite the importance of health literacy to health-promoting behaviors, few studies have assessed the social determinants of health literacy in a random sample of individuals from the USA. The study evaluated the association of sociodemographic factors with individual health literacy levels. This cross-sectional web-based observational study utilized the Health Literacy Questionnaire (HLQ), a multidimensional instrument measuring nine areas of literacy. Multivariate regression results revealed several factors associated with HLQ scores such as self-rated health rating, frequency of visits to healthcare providers, smoking, gender and rural versus urban residence. Low health literacy was associated with lower self-rated overall health and with less frequent visits to healthcare providers. Males scored higher on engaging with health providers, navigating, understanding the health system and understanding health information well enough to know what to do. These findings can guide healthcare professionals to focus on individuals from groups having lower health literacy scores to promote healthy behaviors.

27 October 2021 in Cancers
Verified
Journal Article
Open access
PDF file
Lawrence FultonLawrence Fulton
Lawrence Fulton
AMAlex McLeod
Alex McLeod
DDDiane M Dolezel
Diane M Dolezel
NBNathaniel Bastian
Nathaniel Bastian
CFChristopher Fulton
Christopher Fulton
(1) Background: Female breast cancer diagnoses odds have increased from 11:1 in 1975 to 8:1 today. Mammography false positive rates (FPR) are associated with overdiagnoses and overtreatment, while false negative rates (FNR) increase morbidity and mortality. (2) Methods: Deep vision supervised learning classifies 299 × 299 pixel de-noised mammography images as negative or non-negative using models built on 55,890 pre-processed training images and applied to 15,364 unseen test images. A small image representation from the fitted training model is returned to evaluate the portion of the loss function gradient with respect to the image that maximizes the classification probability. This gradient is then re-mapped back to the original images, highlighting the areas of the original image that are most influential for classification (perhaps masses or boundary areas). (3) Results: initial classification results were 97% accurate, 99% specific, and 83% sensitive. Gradient techniques for unsupervised region of interest mapping identified areas most associated with the classification results clearly on positive mammograms and might be used to support clinician analysis. (4) Conclusions: deep vision techniques hold promise for addressing the overdiagnoses and treatment, underdiagnoses, and automated region of interest identification on mammography.