John Billimek

John Billimek
University of California, Irvine | UCI ·  Health Policy Research Institute

PhD

About

58
Publications
6,218
Reads
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1,090
Citations
Citations since 2016
16 Research Items
660 Citations
2016201720182019202020212022020406080100
2016201720182019202020212022020406080100
2016201720182019202020212022020406080100
2016201720182019202020212022020406080100
Introduction
Skills and Expertise

Publications

Publications (58)
Article
Full-text available
Background: Traffic and industrial emissions are associated with increased pediatric asthma morbidity. However, few studies have examined the influence of city industrial zoning on pediatric asthma outcomes among minoritized communities with limited access to air monitoring. Methods: In this cross-sectional analysis of 39,974 school-aged student...
Article
Community-initiated health interventions fill important gaps in access to health services. This study examines the effectiveness of a community-initiated health intervention to improve diabetes management in an underserved community of color using a retrospective observational study, comparing a study intervention, the Latino Health Access Diabetes...
Conference Paper
Unlike other checkpoint inhibitors, our targeted immunotherapeutic localizes to any solid tumor and simultaneously shields an agent of immunosuppression while presenting a signal for immunostimulation. Phosphatidylserine (PS) exposure on the extracellular surface of living tumor cells and their vasculatures provides one avenue by which the tumor mi...
Article
Bladder trabeculation (BT) is commonly noted on cystogram images of patients with neurogenic bladder (NB). BT is associated with a hostile bladder often requiring prompt, more aggressive management. We aimed to define and validate a reliable grading system for BT severity. The proposed grading system will improve clinicians and radiologist’s commun...
Article
Purpose: This systematic review and meta-analysis evaluated the effectiveness of diabetes self-management education (DSME) in reducing glycosylated hemoglobin (A1C) levels in adult Latinos with type 2 diabetes (T2DM). Methods: Five databases were searched for DSME randomized controlled trials or quasi-experimental trials published between Januar...
Article
Background: Latinos constitute 17% of the US population and are one of the largest ethnic groups; however, only 7.6% participate in research studies. There is a disproportionately high number of Latinos living with type 2 diabetes mellitus and are at increased risk for cardiovascular events. Research to elicit facilitators and barriers for partici...
Article
Introduction: Antenatal hydronephrosis is a steady source of urology referrals since the era of routine fetal ultrasonography. Although most resolve, there are no guidelines for follow-up. Objective: Our goal is to define safe parameters with which patients can be discharged early and avoid unnecessary follow-up. Methods: We retrospectively re...
Article
Aim: To validate the total illness burden index for prostate cancer (TIBI-CaP) in castration-resistant prostate cancer (CRPC) patients. Patients & methods: Baseline comorbidity scores collected using the TIBI-CaP were compared with the baseline patient-reported health-related quality of life using the SF-12v2 and FACT-P questionnaires in 302 pat...
Article
Background: Although early reperfusion is the most desirable intervention after ischemic myocardial insult, it may add to damage through oxidative stress. Objectives: This study investigated the cardioprotective effects of a single intravenous dose of heat shock protein-72 (HSP72) coupled to a single-chain variable fragment (Fv) of monoclonal an...
Article
Aims: To evaluate the ability of a bladder pressure/volume diary (PVD) to identify patients at risk for elevated intravesical pressures. Methods: Clean intermittent catheterization (CIC) dependent patients used ruler-based manometry to measure intravesical pressures prior to leakage or scheduled drainage at home. We prospectively collected clini...
Article
256Background: The TRUMPET registry is a prospective, observational cohort study of patients (pts) with CRPC designed to evaluate treatment patterns and health-related quality of life (HRQoL) outcomes associated with CRPC and its management in a real-world setting. Comorbidities may influence how physicians approach CRPC treatment; therefore, evalu...
Article
Full-text available
Objective The prevalence of diabetes mellitus (DM) is increasing rapidly, particularly in Asia. Asian immigrants in Western countries are a fast-growing population who carry both intrinsic risks due to their genetic background and extrinsic risks associated with Western lifestyles. However, recent trends in diabetes prevalence and associated risk f...
Article
Full-text available
Purpose: The purpose of this study was to examine the reliability and validity of a Spanish version of the Beliefs about Medicines Questionnaire (BMQ) as a measure to evaluate beliefs about medications and to differentiate adherent from nonadherent patients among low-income Latino patients with diabetes in the United States. Methods: Seventy-thr...
Article
Objective: To evaluate the relationship of fitness and obesity on asthma risk in adolescent girls and boys. Study design: A cross-sectional assessment of participants 12-19 years of age was conducted by the use of data from the 1999-2004 National Health and Nutrition Examination Survey. Participants completed cardiorespiratory fitness testing, b...
Article
The prevalence of diabetes in the Middle East is increasing rapidly due to urbanization, reduced levels of physical activity, and a nutritional transition toward increased consumption of fats and refined carbohydrates. Preventive strategies are of paramount importance to stemming the tide. Portable touch-screen computer technology may hold an answe...
Article
Introduction: Traditionally, a single posterior view is employed to measure differential renal function(DRF) during nuclear renal scintigraphy. Nevertheless, experimental data shows important variation in this measurement in the setting of significant hydronephrosis. To date, the impact of hydronephrosis on the accuracy of DRF determination based...
Article
OBJECTIVE To assess the time-dependent exposure of California healthcare facilities to patients harboring methicillin-resistant Staphylococcus aureus (MRSA), vancomycin-resistant enterococci (VRE), extended-spectrum β-lactamase (ESBL)–producing Escherichia coli and Klebsiella pneumoniae , and Clostridium difficile infection (CDI) upon discharge fro...
Article
Introduction: It has been well recognized that simulators are effective tools to teach and evaluate technical skills in laparoscopic surgery. Endoscopic injection for the correction of vesicourteral reflux has a definite learning curve. Surgeon experience has also been demonstrated to have an important role in the outcome of the procedure. Simulat...
Article
Older Hispanic Americans are a rapidly growing minority group who are disproportionately affected by diabetes mellitus and obesity. Given the importance of physical activity, particularly leisure-time activity, in the management of diabetes mellitus and obesity, the current study examined ethnic and sex differences in walking for transportation, le...
Article
Full-text available
In addition to individual-level socioeconomic and psychological factors, the neighborhood environment has been found to be related to medication nonadherence, particularly among low-income, minority populations managing a chronic disease. In this article, we synthesize the relevant literature on how neighborhood factors contribute to engagement in...
Article
To construct a risk prediction instrument stratifying patients with primary vesicoureteral reflux(VUR) into groups according to their two-year probability of breakthrough urinary tract infection(BTUTI). Demographic and clinical information was retrospectively collected on children diagnosed with primary VUR, and followed for two years. Bivariate an...
Article
Full-text available
Low-income, Mexican-American patients with diabetes exhibit high rates of medication nonadherence, poor blood sugar control and serious complications, and often have difficulty communicating their concerns about the medication regimen to physicians. Interventions led by community health workers, non-professional community members who are trained to...
Article
To examine the relative contribution of glycaemic control (HbA1C) and depressive symptoms on diabetes-related symptom burden (hypoglycaemia and hyperglycaemia) in order to guide medication modification. Secondary analysis of medical records data and questionnaires collected from a racially/ethnically diverse sample of adult patients with type 2 dia...
Article
Across 366 California hospitals, we identified hospital-level characteristics predicting increased hospital-associated Clostridium difficile infection (HA-CDI) rates including more licensed beds, teaching and long-term acute care (LTAC) hospitals, and polymerase chain reaction testing. Adjustment for these characteristics impacted rankings in 24% o...
Article
We examined racial/ethnic differences in patients' ratings of components of interpersonal quality [participatory decision making (PDM) style, being treated as an equal partner, and feelings of trust], and evaluated the association between each of these components and patients' ratings of overall healthcare quality among non-Hispanic white (NHW), Vi...
Article
Full-text available
Self-monitoring of blood glucose is a critical component of diabetes management. However, patients often do not maintain the testing schedule recommended by their healthcare provider. Many barriers to testing have been cited, including cost and pain. We present a small pilot study to explore whether the use of financial incentives and pain-free lan...
Article
Gender differences in dyslipidemia are widely documented, but the contributors to these differences are not well understood. This study examines whether differences in quality of care, intensity of lipid-lowering medication regimen, and medication adherence can explain this disparity. Secondary analysis of medical records data and questionnaires co...
Article
Full-text available
Purpose: This study examines the use of complementary and alternative medicine (CAM) by ethnicity/race among patients with type 2 diabetes. Subjects and methods: Four hundred and ten (410) patients with type 2 diabetes recruited from an academic-medical center completed a survey assessing CAM use, diabetes status, and sociodemographic characteri...
Article
Full-text available
Background: States have established public reporting of hospital-associated (HA) infections-including those of methicillin-resistant Staphylococcus aureus (MRSA)-but do not account for hospital case mix or postdischarge events. Objective: Identify facility-level characteristics associated with HA-MRSA infection admissions and create adjusted hos...
Article
Objectives (1) Investigate whether otolaryngology–head and neck surgery (OHNS) outpatients consult health-related online resources and establish baseline levels of perceived eHealth literacy. (2) Determine which resources patients use to investigate their disease and research treating physicians. (3) Explore relationships between perceived eHealth...
Article
Full-text available
Unlabelled: Abstract Background: Currently, there is limited information on the effects of growth hormone and of the different genetic subtypes on bone mineral density (BMD) in Prader-Willi syndrome (PWS). Methods: We evaluated BMD in 79 individuals with the common subtypes of PWS (48 with deletion and 27 with UPD) and the effect of growth hormo...
Article
STEM disciplines, especially at research universities, have been measurably slow to integrate online modalities into undergraduate classes. Current and future students are now "digital natives" interacting with the world and absorbing information in a very "YouTube" style, characterized by short, on-demand, and entertaining chunks of information. F...
Article
Full-text available
Objective: High rates of medication nonadherence observed in disadvantaged populations are often attributed to socioeconomic factors. Little is known, however, about how a person's neighborhood environment may contribute to nonadherence beyond what can be explained by a lack of individual resources to pay for medications. This study considered the...
Article
Background: Previously, the patient-reported Total Illness Burden Index for Prostate Cancer (TIBI-CaP) questionnaire and/or the physician-reported Charlson Comorbidity Index (CCI) have provided assessments of competing comorbidity during treatment decisions for patients with prostate cancer. In the current study, the authors used these assessments...
Conference Paper
BACKGROUND: California hospitals are mandated to report hospital-associated Clostridium difficile infection (HA-CDI) rates. However, risk adjustment methods are limited. We sought to identify readily-available facility-level adjustors for HA-CDI rates in California hospitals. METHODS: We conducted a retrospective cohort study of all California ho...
Article
Full-text available
Background: Despite numerous efforts to change healthcare delivery, the profile of disparities in diabetes care and outcomes has not changed substantially over the past decade. Objective: To understand potential contributors to disparities in diabetes care and glycemic control. Design: Cross sectional analysis. Setting: Seven outpatient clin...
Article
Objective To assess the independent association of food insecurity with processes of care and delays in filling prescriptions. Data Source2007 California Health Interview Survey. Study DesignAssociations of food insecurity with processes of care and delays in filling prescriptions were examined using multivariable logistic regression analyses adjus...
Article
Background: Among patients with type 2 diabetes, it is not known whether risk factor control is better or worse for those who also have heart disease, depression, multiple other comorbidities, and associated management challenges. Objective: To examine the relationship between this complex constellation of multimorbidities, adherence to treatmen...
Article
Full-text available
Objectives: To examine racial/ethnic differences in the dietary behaviors of overweight or obese adults using the 2007 California Health Interview Survey. Method: Data were obtained from the 2007 California Health Interview Survey, a population-based sample of noninstitutionalized adults in California. The sample included 26,721 adults aged 18 y...
Article
215 Background: Comorbidities significantly influence how physicians approach the treatment of prostate cancer and should be evaluated prior to the prostate biopsy. The Total Illness Burden Index for Prostate Cancer (TIBI-CaP) patient questionnaire and Charlson Comorbidity Index (CCI) usually calculated by the physician, may provide information on...
Article
Full-text available
The Affordable Care Act is designed to decrease the numbers of uninsured patients in U.S. However, even with insurance, patients who have financial hardships may have difficulty obtaining their medications because of cost issues. Among patients with type 2 diabetes, to examine the association between patients' self-reported financial pressures on c...
Article
Full-text available
Few studies have explored the association between neighborhood characteristics and adherence to diabetes self-management behaviors, and none have examined the influence of neighborhood safety on adherence to treatment regimens among patients with diabetes. To assess whether neighborhood safety is associated with self-reports of technical quality of...
Article
Full-text available
To examine racial/ethnic differences in the prevalence of depressive symptoms and in provider recognition of depression among Latino, Asian, and non-Hispanic white patients with type 2 diabetes. Patients (n = 1,209) with type 2 diabetes were recruited from five university-affiliated primary care clinics for an observational study. Vietnamese Americ...
Article
We estimated the prevalence of fluoroquinolone resistant Escherichia coli in patients undergoing repeat transrectal ultrasound guided prostate needle biopsy and identified high risk groups. From January 2009 to March 2010 rectal swabs of 136 men from 3 institutions undergoing transrectal ultrasound guided prostate needle biopsy were obtained. There...
Article
Interest in comparative effectiveness research and the rising number of negative or "small effect" trials have stimulated research into differential response to treatment among subgroups of patients. To develop and test the Potential for Benefit Scale (PBS), a composite measure to identify subgroups of patients with differential potential for respo...
Chapter
The Total Illness Burden Index is a comprehensive summary measure of case mix or severity of illness that aggregates all of the patients’ conditions, problems, and diseases, weighting them by their severity. The TIBI offers advantages over other methods of case mix measurement because it (1) is based on clinical information beyond the simple presen...
Article
Full-text available
Recent studies have shown mixed results regarding the effectiveness of intensive glucose-lowering therapy in reducing risk for cardiovascular events. To determine whether attaining hemoglobin A(1c) (HbA(1c)) targets of 6.5% or less or 7.0% or less for glycemic control at baseline provides differential benefits for patients with high versus low-to-m...
Article
Research on synergistic effects of patient targeted interventions combined with physician-targeted interventions has been limited. To compare a combined physician-patient intervention to physician feedback alone on a composite outcome of glycemic, lipid and blood pressure control. In this cluster study 417 patients with adult-type 2 diabetes from f...
Article
Full-text available
People vary in the importance they ascribe to, and efforts they invest in, maintaining positive relationships with others. Research has linked such variation in interpersonal control strivings to the quality of social exchanges experienced, but little work has examined the predictors of interpersonal control strivings. Given the importance of close...
Article
Although many states in the US have raised cigarette excise taxes in recent years, the size of these increases have been fairly modest (resulting in a 15% increase in the per pack purchase price), and their impact on adult smoking prevalence is likely insufficient to meet Healthy People 2010 objectives. This paper presents the results of a 75-year...
Article
Full-text available
With adult smoking prevalence rates declining too slowly to reach national objectives, opinion leaders are considering policies to improve tobacco-related outcomes by regulating the composition of cigarettes to be (1) less harmful and/or (2) less addictive. Because harm reduction efforts may actually encourage higher cigarette consumption by promot...

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