RESUMEN
BACKGROUND: Effective screening of alcohol use and prevention of alcohol use disorder (AUD) requires the continuous preparation of educated and confident providers across all health professions who will ideally work in close collaboration in their future practices. As one mechanism for achieving this goal, the development and provision of interprofessional education (IPE) training modules for health care students may cultivate beneficial interactions among future health providers early in their formative education. METHODS: In the present study, we assessed attitudes about alcohol and confidence in screening and AUD prevention in 459 students at our health sciences center. Students represented ten different health professions (audiology, cardiovascular sonography, dental hygiene, dentistry, medicine, nursing, physical therapy, public health, respiratory therapy, and speech language pathology programs). For purposes of this exercise, students were divided into small, professionally diverse teams. Responses to ten survey questions (Likert scale) were collected via a web-based platform. These assessments were collected before and after a case-based exercise that provided information to students on the risks of excessive alcohol use as well as the effective screening and team-based management of individuals susceptible to AUD. RESULTS: Wilcoxon signed-rank analyses revealed that the exercise led to significant decreases in stigma toward individuals engaging in at-risk alcohol use. We also discovered significant increases in self-reported knowledge and confidence in personal qualifications needed to initiate brief interventions to reduce alcohol use. Focused analyses of students from individual health programs uncovered unique improvements according to question theme and health profession. CONCLUSION: Our findings demonstrate the utility and effectiveness of single, focused IPE-based exercises to impact personal attitudes and confidence in young health professions learners. While additional longitudinal cohort follow-up studies are needed, these results may translate into more effective and collaborative AUD treatment in future clinical settings.
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Alcoholismo , Estudiantes de Medicina , Humanos , Relaciones Interprofesionales , Educación Interprofesional , Empleos en Salud , Actitud del Personal de SaludRESUMEN
Difelikefalin is a peripherally restricted kappa opioid receptor (KOR) agonist that was recently approved by the FDA to treat pruritis in dialysis patients. Here, we investigated the cardiovascular and renal responses to difelikefalin, and using the KOR antagonist norbinaltorphimine (norBNI), examined whether any difelikefalin-induced changes in the renal excretion of water and/or electrolytes were mediated through a central or peripheral KOR pathway. The effects of norBNI pretreatment on nalfurafine, a KOR agonist that crosses the blood-brain barrier, were also examined. We hypothesized that difelikefalin would alter urine output differently than nalfurafine, given that KOR agonists produce diuresis via activating central KORs to inhibit vasopressin release. Following catheterization, conscious Sprague-Dawley rats were infused i.v. with isotonic saline and pretreated with norBNI centrally via an intracerebroventricular (ICV) cannula or peripherally via an intravenous catheter. After stabilization, difelikefalin or nalfurafine was administered i.v. and urine output, heart rate and mean arterial pressure (MAP) were recorded for 90 min. Difelikefalin produced a significant increase in urine output, and significant decrease in urinary sodium and potassium excretion, urine osmolality, and MAP. ICV norBNI pretreatment markedly attenuated the increase in urine output caused by difelikefalin and nalfurafine but did not inhibit the electrolyte effects. However, IV norBNI pretreatment prevented all responses to difelikefalin and nalfurafine. Together, these findings demonstrate that difelikefalin and nalfurafine utilize central KOR pathways to elicit diuresis and a decrease in MAP but enhance renal tubular electrolyte reabsorption through a peripheral KOR pathway, providing important insight into two clinically useful KOR agonists.
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Diuresis , Receptores Opioides kappa , Animales , Ratas , Receptores Opioides kappa/metabolismo , Ratas Sprague-Dawley , Analgésicos Opioides/farmacologíaRESUMEN
BACKGROUND: Inflammation persists among persons with human immunodeficiency virus (PWH) despite effective antiretroviral therapy and may contribute to T-cell dysfunction. Alcohol use is prevalent among PWH and promotes intestinal leak, dysbiosis, and a proinflammatory milieu. Whether alcohol use is associated with T-cell late differentiation remains to be investigated. METHODS: Data and samples from PWH (Nâ =â 359 of 365) enrolled in the New Orleans Alcohol Use in HIV Study were used. Alcohol use was assessed by self-report (Alcohol Use Disorders Identification Test; lifetime alcohol exposure; 30-day Alcohol Timeline Followback) and phosphatidylethanol (PEth) quantitation. In a subset of participants, fecal bacterial content was assessed by ribosomal 16S marker gene deep sequencing and quantitative polymerase chain reaction. Intestinal leak was assessed by fecal-to-plasma α-1-antitrypsin (A1AT) enzyme-linked immunosorbent assay ratio. Peripheral T-cell populations were quantified by flow cytometry. RESULTS: Alcohol Use Disorder Identification Test scores were positively associated with activated-senescent, exhausted, and terminal effector memory CD45RA+CD8+ but not CD4+ T cells (cells/µL) after confounder adjustment (Pâ <â .050). Phosphatidylethanol was positively associated with A1AT (Pâ <â .050). The PEth and activated-senescent CD8+ were associated with bacterial ß-diversity (Pâ <â .050) and positively associated with the relative abundance of coabundant Prevotellaceae members (qâ <â .100). CONCLUSIONS: Alcohol use among PWH is associated with CD8+ T-cell late differentiation, intestinal leak, and dysbiosis. Alcohol-associated dysbiosis is implicated in CD8+ T-cell senescence.
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Alcoholismo , Linfocitos T CD8-positivos/clasificación , Disbiosis , Infecciones por VIH , Alcoholismo/complicaciones , Disbiosis/complicaciones , Infecciones por VIH/complicaciones , Humanos , FenotipoRESUMEN
Research within interprofessional education (IPE) indicates health professional students hold stereotypes of other health professions at all stages within their academic journey. IPE can minimize negative stereotypes and influence a student's willingness and readiness to collaborate with others. This article explores undergraduate pre-health student stereotypes of various health professionals at the beginning and end of a six-week summer academic enrichment program, which included IPE. Convenience sampling was used to request participation in a survey, which included the Student Stereotypes Ratings Questionnaire (SSRQ). The SSRQ asks students to rate their perception of health professions on multiple traits. One hundred pre-health students across three institutions completed the SSRQ. The mean scores across all professions and all traits increased post-survey. Lowest pre-mean scores were for nursing (the ability to work independently and the ability to lead a team) and registered dietitian (the ability to lead a team). The highest pre-mean score was for the physician profession for academic ability. Results from this study indicate varying levels of stereotypes have already developed in pre-health students. After the six-week program, pre-health students' perceptions of health professions were positively affected. Data from this study indicates there are benefits to exposing pre-health students to IPE.
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Educación Interprofesional , Estudiantes del Área de la Salud , Actitud del Personal de Salud , Empleos en Salud , Humanos , Relaciones InterprofesionalesRESUMEN
PURPOSE/OBJECTIVES: Baseline IPE perceptions for dental students were gathered prior to the implementation of a 2-year formalised IPE curriculum at a US institution. The goal was to establish a baseline of student perceptions and, in the future, continue to track student IPE perception data with IPE engagement as one measure of outcomes. The purpose of this paper is to analyse two dental student cohort perceptions of IPE after engaging in a 2-year longitudinal curriculum. METHODS: First- and second-year students were required to participate in a 2-year IPE curriculum. As a requirement of the curriculum, students were asked to complete a validated IPE assessment, the Student Perceptions of Interprofessional Clinical Education-Revised instrument, version 2 (SPICE-R2). Students completed the SPICE-R2 survey, using a retrospective pretest/post-test design, after engaging in the 2-year curriculum. RESULTS: Sixty-four students in cohort 2017 and 70 students in cohort 2018 completed the entire SPICE-R2. Statistically significant positive changes (p < .05) were found in both dental student cohorts after engagement in the 2-year longitudinal IPE curriculum. CONCLUSION(S): A longitudinal IPE curriculum has the potential to impact student IPE perceptions. Additional longitudinal multi-institutional research is needed to determine best practices in delivery and learning.
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Educación Interprofesional , Estudiantes de Odontología , Actitud del Personal de Salud , Curriculum , Educación en Odontología , Humanos , Relaciones Interprofesionales , Percepción , Estudios RetrospectivosRESUMEN
BACKGROUND: High frequency of alcohol use among people living with HIV (PLWH) warrants careful assessment and screening to better understand its impact on HIV disease progression and development of comorbidities. Due to the limitations of the tools used to measure alcohol use, the links to health consequences are not fully understood. METHODS: We completed a cross-sectional analysis to examine the prevalence of alcohol consumption using multiple alcohol assessment tools and their correlation and consistency in a cohort of PLWH (N = 365) enrolled in the New Orleans Alcohol Use in HIV (NOAH) Study. Alcohol use was assessed with the Alcohol Use Disorders Identification Test (AUDIT), timeline followback (TLFB) Calendar, lifetime drinking history, Alcohol and Drug Addiction Severity Index, and blood levels of phosphatidylethanol (PEth). Spearman's correlations were estimated for continuous measures of alcohol consumption; Wilcoxon rank-sum tests were used to compare means; and logistic regression was used to estimate odds of alcohol use by demographic characteristics. RESULTS: Self-report of current alcohol use varied from 58.9 to 73.7% depending on the assessment. All the self-reported alcohol measures showed statistically significant correlations with the biological marker PEth. The highest correlation was with TLFB grams (r = 0.67, p < 0.001). Using TLFB, 73.7% of the cohort reported using alcohol in the last 30 days, and 61.6% had a positive PEth value. The prevalence of risky drinkers, meeting the TLFB > 3 (women) or >4 (men) drinks/day or>7 (women) or>14 (men) drinks/week, was 49.0%. Medium-risk drinking defined as an AUDIT score ≥ 8 was reported in 40.3%, and high-risk drinkers/probable AUD (AUDIT score ≥ 16) was met by 17.0% of the cohort. CONCLUSIONS: Our results demonstrate the importance of comprehensive assessments for alcohol use, including self-report via multiple assessment tools administered by trained staff, as well as the addition of biomarkers for improved classification of subjects into different drinking categories.
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Consumo de Bebidas Alcohólicas/epidemiología , Alcoholismo/epidemiología , Infecciones por VIH/epidemiología , Adulto , Consumo de Bebidas Alcohólicas/sangre , Alcoholismo/sangre , Estudios Transversales , Femenino , Glicerofosfolípidos/sangre , Ambiente en el Hogar , Humanos , Modelos Logísticos , Masculino , Persona de Mediana Edad , Nueva Orleans/epidemiología , Autoinforme , Adulto JovenRESUMEN
BACKGROUND: Alcohol use disorders (AUDs) are highly prevalent in people living with HIV (PLWH) and are associated with increased HIV risk behaviors, suboptimal treatment adherence, potential interaction with medication pharmacodynamics, and greater risk for disease progression. Preclinical studies show that chronic binge alcohol administration accelerates disease progression and aggravates pathogenesis in the simian immunodeficiency virus (SIV)-infected rhesus macaque model despite viral suppression by antiretroviral therapy. METHODS: To translate preclinical findings in the rhesus macaque model of chronic binge alcohol administration and SIV infection and to address areas of uncertainty surrounding the biological mechanisms and socioenvironmental modifiers that contribute to the relationship between alcohol use and HIV-associated comorbidities, precocious aging, and disease progression, we designed a translational multiproject, longitudinal, cohort study, and the New Orleans Alcohol Use in HIV (NOAH) Study. The NOAH Study is led by a multidisciplinary team of scientists, with a research focus on the interaction of AUD and HIV. The overarching hypothesis is that alcohol use will lead to adverse health outcomes in PLWH. In this report, we describe the study design and baseline descriptive characteristics of our cohort. RESULTS: Three-hundred and sixty-five participants completed the baseline testing. The cohort is predominantly male (69%) and African American (83.5%). The majority of participants report incomes below 200% of the federal poverty level. CD4 counts <200 cells/µl were found in 12.8% and viral loads <50 copies/ml were found in 73.6%. These HIV status variables did not differ based upon alcohol use. CONCLUSIONS: The NOAH Study facilitates bidirectional translational investigation of alcohol's impact on PLWH. Translation of preclinical findings to PLWH permits confirmation of basic biological mechanisms in humans and also allows incorporation of sociobehavioral factors that may affect biology but are challenging to replicate in preclinical models.
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Consumo de Bebidas Alcohólicas/efectos adversos , Consumo de Bebidas Alcohólicas/epidemiología , Infecciones por VIH/epidemiología , Infecciones por VIH/psicología , Proyectos de Investigación , Investigación Biomédica Traslacional/métodos , Adulto , Anciano , Femenino , Humanos , Estudios Longitudinales , Masculino , Persona de Mediana Edad , Multimorbilidad , Nueva Orleans/epidemiología , Factores de Riesgo , Adulto JovenRESUMEN
The primary purpose of conducting two interprofessional education (IPE) experiences during a multidisciplinary physiology graduate-level course was to provide basic science, physical therapy, and physician assistant graduate students opportunities to work as a team in the diagnosis, treatment, and collaborative care when presented with a patient case focused on acute kidney injury (first case) and female athlete triad (second case). The secondary purpose was to apply basic physiology principles to patient case presentations of pathophysiology. The overall purpose was to assess the longitudinal effects and the value of IPE integrated within a basic science course. The following Interprofessional Education Collaborative subcompetencies were targeted: roles/responsibilities (RR1, RR4). Students were given a pre- and postsurvey to assess their IPE perceptions and knowledge of professional roles. There were statistically significant increases from the presurvey renal IPE experience to the presurvey endocrine IPE experience for two perception questions regarding the ability to explain the roles and responsibilities of a physical therapist (PT) and physician assistant using a Likert scale. In addition, student knowledge of the role of a PT increased significantly when comparing the renal IPE presurvey to the endocrine IPE presurvey results to open-ended questions. Students' perceptions of their knowledge as well as their ability to express, in writing, their newly learned knowledge of the role of a PT was sustained over time. Incorporating multiple IPE experiences into multidisciplinary health science courses represents an appropriate venue to have students learn and apply interprofessional competencies.
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Educación de Postgrado/métodos , Relaciones Interprofesionales , Fisiología/educación , Estudiantes del Área de la Salud , Universidades , Humanos , Fisiología/métodos , Aprendizaje Basado en Problemas/métodosRESUMEN
The purpose of the study was to determine the impact of an interprofessional education (IPE) experience on first year students across all schools of a health sciences center on the topic of pediatric immunizations. The authors conducted a pre-/post-test at Louisiana State University Health Sciences Center-New Orleans with 731 first year students from 25 academic programs encompassing all six schools (Allied Health, Dentistry, Graduate Studies, Medicine, Nursing and Public Health). In the four questions related to the Interprofessional Education Collaborative (IPEC) sub-competencies and the three questions related to professional role regarding immunizations, there was a statistically significant difference in the pre-/post-test survey results (P < 0.0001). Student learning related to the collaboration needed to make a larger impact on patient outcomes was demonstrated through assessment of an open-ended question. IPE experiences can improve first-year students' perceptions of IPEC sub-competencies regarding the importance of population health and teamwork. By utilizing a population health focus with IPE activities, novice learners are equipped to learn and apply collaborative practice skills along with recognizing the importance of promoting overall health and well-being instead of just health care.
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Actitud del Personal de Salud , Conducta Cooperativa , Atención a la Salud/organización & administración , Relaciones Interprofesionales , Competencia Clínica , Humanos , Inmunización/psicología , Louisiana , Aprendizaje Basado en Problemas , Rol Profesional , Estudiantes del Área de la SaludRESUMEN
Under pressures to support health system transformation, many health professional accreditation organizations have incorporated standards requiring interprofessional education. However, the inclusion of population health topics and public health or health administration students into IPE experiences is limited. With the belief that understanding and cooperation among the health professions will be important to support health system transformation, The Louisiana State University Health Sciences Center-New Orleans has created several IPE experiences focused on population health, programs that are examined in this article along with insights that could prove useful for other programs seeking to build IPE into their regular curricula.
RESUMEN
Nischarin (Nisch) is a key protein functioning as a molecular scaffold and thereby hosting interactions with several protein partners. To explore the physiological importance of Nisch, here we generated Nisch loss-of-function mutant mice and analyzed their metabolic phenotype. Nisch-mutant embryos exhibited delayed development, characterized by small size and attenuated weight gain. We uncovered the reason for this phenotype by showing that Nisch binds to and inhibits the activity of AMP-activated protein kinase (AMPK), which regulates energy homeostasis by suppressing anabolic and activating catabolic processes. The Nisch mutations enhanced AMPK activation and inhibited mechanistic target of rapamycin signaling in mouse embryonic fibroblasts as well as in muscle and liver tissues of mutant mice. Nisch-mutant mice also exhibited increased rates of glucose oxidation with increased energy expenditure, despite reduced overall food intake. Moreover, the Nisch-mutant mice had reduced expression of liver markers of gluconeogenesis associated with increased glucose tolerance. As a result, these mice displayed decreased growth and body weight. Taken together, our results indicate that Nisch is an important AMPK inhibitor and a critical regulator of energy homeostasis, including lipid and glucose metabolism.
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Proteínas Quinasas Activadas por AMP/metabolismo , Metabolismo Energético , Gluconeogénesis , Péptidos y Proteínas de Señalización Intracelular/metabolismo , Metabolismo de los Lípidos , Hígado/metabolismo , Proteínas Quinasas Activadas por AMP/genética , Animales , Línea Celular , Glucosa/genética , Glucosa/metabolismo , Humanos , Receptores de Imidazolina , Péptidos y Proteínas de Señalización Intracelular/genética , Hígado/patología , Ratones , Ratones Mutantes , Mutación , Oxidación-Reducción , Unión ProteicaRESUMEN
Motivation: Testing SNP-SNP interactions is considered as a key for overcoming bottlenecks of genetic association studies. However, related statistical methods for testing SNP-SNP interactions are underdeveloped. Results: We propose the SNP Interaction Pattern Identifier (SIPI), which tests 45 biologically meaningful interaction patterns for a binary outcome. SIPI takes non-hierarchical models, inheritance modes and mode coding direction into consideration. The simulation results show that SIPI has higher power than MDR (Multifactor Dimensionality Reduction), AA_Full, Geno_Full (full interaction model with additive or genotypic mode) and SNPassoc in detecting interactions. Applying SIPI to the prostate cancer PRACTICAL consortium data with approximately 21 000 patients, the four SNP pairs in EGFR-EGFR , EGFR-MMP16 and EGFR-CSF1 were found to be associated with prostate cancer aggressiveness with the exact or similar pattern in the discovery and validation sets. A similar match for external validation of SNP-SNP interaction studies is suggested. We demonstrated that SIPI not only searches for more meaningful interaction patterns but can also overcome the unstable nature of interaction patterns. Availability and Implementation: The SIPI software is freely available at http://publichealth.lsuhsc.edu/LinSoftware/ . Contact: hlin1@lsuhsc.edu. Supplementary information: Supplementary data are available at Bioinformatics online.
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Epistasis Genética , Estudios de Asociación Genética/métodos , Polimorfismo de Nucleótido Simple , Neoplasias de la Próstata/genética , Programas Informáticos , Estadística como Asunto , Receptores ErbB/genética , Predisposición Genética a la Enfermedad , Humanos , Masculino , Metaloproteinasa 16 de la Matriz/genética , Modelos Genéticos , Neoplasias de la Próstata/metabolismoRESUMEN
Incorporating active interprofessional education (IPE) opportunities into the classroom setting is a potentially effective mechanism to enhance student learning both in the basic sciences and for future interprofessional collaboration. We integrated an IPE exercise into a graduate-level human physiology course at our health sciences center that enrolled physician assistant (PA), physical therapy (PT), and graduate studies students. Our activity adopted and targeted the four Interprofessional Education Collaborative (IPEC) competency domains of values/ethics (VE), roles/responsibilities, interprofessional communication, and teams and teamwork (TT). Effectiveness of the training exercise was determined via pre- and postsurveys, which assessed student self-perceptions of IPEC competency domains, as well as student reflections and evaluations of the exercise itself. We noted a significant improvement in each of the targeted IPEC subcompetencies among all of the students, and within both PT and PA groups when analyzed separately. Moreover, a positive correlation was found between the number of previous IPE experiences and presurvey IPEC VE and TT subcompetency ratings. Our discoveries provide an example of broad acquisition of IPE learning within the context of a physiology curriculum. Perhaps more importantly, our findings indicate that a history of IPE training sets the stage for future IPE learning, reflecting a potential for IPE to transform basic physiological principles into team-based practice and improvement in patient outcomes.
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Curriculum , Empleos en Salud/educación , Relaciones Interprofesionales , Grupo de Atención al Paciente , Fisiología/educación , Aprendizaje Basado en Problemas/métodos , Curriculum/tendencias , Predicción , Empleos en Salud/tendencias , Humanos , Grupo de Atención al Paciente/tendencias , Aprendizaje Basado en Problemas/tendencias , Estudiantes del Área de la SaludRESUMEN
PURPOSE: The purpose of the present study was to identify the risk factors for major complications developing during the operative treatment of mandibular fractures. PATIENTS AND METHODS: We conducted a retrospective medical record review of patients who had undergone open reduction, internal fixation of mandibular fractures from August 1, 2012 to December 31, 2014 at a large, urban teaching hospital and level 1 trauma center. The outcome variable of interest was major complications, defined as the occurrence of any one of the following events: hospital readmission, return to the operating room, and a prolonged, unexpected postoperative stay. Multiple demographic, social, medical, injury-related, and treatment-related variables were recorded during the medical record review. The relationships between these variables and our outcome variable were analyzed using univariate and multivariable logistic regression analyses. RESULTS: A total of 317 patients met the inclusion criteria. The hospital readmission rate was 7.2%, the reoperation rate was 9.5%, and the rate of unplanned, prolonged admission was 0.6%, for a total major complication rate of 11.4%. Eight variables reached statistical significance in their association with the occurrence of major complications. These were the presence of medical comorbidities, a diagnosis of depression, a diagnosis of a psychiatric disorder, incarceration, interpersonal violence as a mechanism of injury, the presence of a left angle fracture, the removal of a tooth in the line of fracture, and patient noncompliance. On multivariable analysis, patient noncompliance, depression, the presence of a left angle fracture, and the removal of a tooth in the line of fracture continued to have statistically significant associations with the occurrence of major complications. CONCLUSIONS: The identification of risk factors for the development of complications in mandibular trauma is a primary concern for surgeons in the modern healthcare system. The present study identified a number of variables significantly associated with an increased risk of the occurrence of major complications, and special consideration should be given to patients with these risk factors.
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Fijación Interna de Fracturas/métodos , Fracturas Mandibulares/cirugía , Complicaciones Posoperatorias/epidemiología , Adulto , Femenino , Humanos , Louisiana/epidemiología , Masculino , Estudios Retrospectivos , Factores de RiesgoRESUMEN
The primary purpose of conducting an interprofessional education (IPE) experience during the renal physiology block of a graduate-level course was to provide basic science, physical therapy, and physician assistant graduate students with an opportunity to work as a team in the diagnosis, treatment, and collaborative care of a patient with acute kidney injury. The secondary purpose was to enhance the understanding of basic renal physiology principles with a patient case presentation of renal pathophysiology. The overall purpose was to assess the value of IPE integration within a basic science course by examining student perceptions and program evaluation. Graduate-level students operated in interprofessional teams while working through an acute kidney injury patient case. The following Interprofessional Education Collaborative subcompetencies were targeted: Roles/Responsibilities (RR) Behavioral Expectations (RR1, RR4) and Interprofessional Communication (CC) Behavioral Expectations (CC4). Clinical and IPE stimulus questions were discussed both within and between teams with assistance provided by faculty facilitators. Students were given a pre- and postsurvey to determine their knowledge of IPE. There were statistically significant increases from pre- to postsurvey scores for all six IPE questions for all students. Physical therapy and physician assistant students had a statistically significant increase in pre- to postsurvey scores, indicating a more favorable perception of their interprofessional competence for RR1, RR4, and CC4. No changes were noted in pre- to postsurvey scores for basic science graduate students. Incorporating planned IPE experiences into multidisciplinary health science courses represents an appropriate venue to have students learn and apply interprofessional competencies.
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Educación de Postgrado/métodos , Relaciones Interprofesionales , Riñón/fisiología , Fisiología/educación , Aprendizaje Basado en Problemas/métodos , Estudiantes del Área de la Salud , Curriculum/normas , Educación de Postgrado/normas , Humanos , Enfermedades Renales/diagnóstico , Enfermedades Renales/fisiopatología , Enfermedades Renales/terapia , Aprendizaje Basado en Problemas/normasRESUMEN
Several researchers have proposed solutions to control type I error rate in sequential designs. The use of Bayesian sequential design becomes more common; however, these designs are subject to inflation of the type I error rate. We propose a Bayesian sequential design for binary outcome using an alpha-spending function to control the overall type I error rate. Algorithms are presented for calculating critical values and power for the proposed designs. We also propose a new stopping rule for futility. Sensitivity analysis is implemented for assessing the effects of varying the parameters of the prior distribution and maximum total sample size on critical values. Alpha-spending functions are compared using power and actual sample size through simulations. Further simulations show that, when total sample size is fixed, the proposed design has greater power than the traditional Bayesian sequential design, which sets equal stopping bounds at all interim analyses. We also find that the proposed design with the new stopping for futility rule results in greater power and can stop earlier with a smaller actual sample size, compared with the traditional stopping rule for futility when all other conditions are held constant. Finally, we apply the proposed method to a real data set and compare the results with traditional designs.
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Teorema de Bayes , Algoritmos , Proyectos de Investigación , Tamaño de la MuestraRESUMEN
Alcohol use disorders (AUDs) frequently exist among persons living with HIV/AIDS. Chronic alcohol consumption, HIV infection, and antiretroviral therapy (ART) are independently associated with impairments in glucose-insulin dynamics. Previous studies from our laboratory have shown that chronic binge alcohol (CBA) administration decreases body mass index, attenuates weight gain, and accentuates skeletal muscle wasting at end-stage disease in non-ART-treated simian immunodeficiency virus (SIV)-infected male rhesus macaques. The aim of this study was to investigate whether CBA and ART alone or in combination alter body composition or glucose-insulin dynamics in SIV-infected male rhesus macaques during the asymptomatic phase of SIV infection. Daily CBA or sucrose (SUC) administration was initiated 3 mo before intrarectal SIV inoculation and continued until the study end point at 11 mo post-SIV infection. ART or placebo was initiated 2.5 mo after SIV infection and continued until study end point. Four treatment groups (SUC/SIV ± ART and CBA/SIV ± ART) were studied. CBA/SIV macaques had significantly decreased circulating adiponectin and resistin levels relative to SUC/SIV macaques and reduced disposition index and acute insulin response to glucose, insulin, and C-peptide release during frequently sampled intravenous glucose tolerance test, irrespective of ART status. No statistically significant differences were observed in homeostatic model assessment-insulin resistance values, body weight, total body fat, abdominal fat, or total lean mass or bone health among the four groups. These findings demonstrate CBA-mediated impairments in glucose-insulin dynamics and adipokine profile in asymptomatic SIV-infected macaques, irrespective of ART.
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Adiponectina/sangre , Consumo Excesivo de Bebidas Alcohólicas/fisiopatología , Glucemia/metabolismo , Peso Corporal , Insulina/sangre , Síndrome de Inmunodeficiencia Adquirida del Simio/fisiopatología , Animales , Terapia Antirretroviral Altamente Activa , Enfermedades Asintomáticas , Consumo Excesivo de Bebidas Alcohólicas/complicaciones , Enfermedad Crónica , Macaca mulatta , Masculino , Síndrome de Inmunodeficiencia Adquirida del Simio/complicaciones , Síndrome de Inmunodeficiencia Adquirida del Simio/prevención & control , Resultado del TratamientoRESUMEN
A growing body of evidence indicates interprofessional collaborative practice improves patient care. With this in mind, Louisiana State University Health Sciences Center formally committed to expanding interprofessional education (IPE) initiatives. Thirty-eight self-selected students enrolled in an IPE elective course during the fall of 2012. Students completed the Readiness for Interprofessional Learning Scale (RIPLS) pre- and post-course and also completed a post-course survey. Results indicated a significant change in the roles and responsibilities scale of the RIPLS. Analysis of the data from the post-course survey demonstrated students were able to identify key terms of an IPE definition, as related to their learning experience. In addition, themes of communication, learning/increased knowledge, and collaboration/contribution of other health care professionals were noted across all questions in the post-course survey. Based on the results of this study, an elective course is a promising educational opportunity to increase awareness and knowledge of IPE within academic medical centers.
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Personal de Salud/educación , Relaciones Interprofesionales , Percepción , Estudiantes del Área de la Salud/psicología , Actitud del Personal de Salud , Conducta Cooperativa , Humanos , Aprendizaje Basado en ProblemasRESUMEN
Food insecurity is a national issue that disproportionately impacts Louisiana citizens, contributing to the state's poor health outcomes. We know that the Supplemental Nutrition Assistance Program (SNAP) and food pantries improve access to food, but we have limited data on what interventions improve food insecurity. The Geaux Get Healthy Clinical Program at Our Lady of the Lake (GGHOLOL) is a clinic-based community program that leverages community partnerships and a clinical setting to provide education and access to resources for individuals with food insecurity. This prospective study examines the impact of GGHOLOL on food insecurity as a pre-post survey evaluation over a two-year period. A total of 57 research participants with food insecurity completed the program. Mean food security scores improved at completion of GGHOLOL, and these scores further improved 6 months after enrollment. Furthermore, participants demonstrated sustainable improvements in healthy eating, cooking, and shopping behaviors. Lastly, participants improved their overall depression scores at the completion of the program with sustainable improvement at 6 months. With the improvement in GGHOLOL on food insecurity and nutrition behaviors, GGHOLOL may serve as a model for other programs addressing food insecurity in the future.
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Dieta Saludable , Asistencia Alimentaria , Humanos , Estudios Prospectivos , Abastecimiento de Alimentos , Pobreza , Conducta Alimentaria , Inseguridad AlimentariaRESUMEN
OBJECTIVE: HIV disease is evolving with more HIV+ persons experiencing a high quality of life with well-controlled viremia. We recently enrolled a large cohort of HIV+ and clinically relevant HIV- persons for oral microbiome analyses that included a questionnaire related to oral hygiene and recreational behaviors. Here, the questionnaire responses were analyzed for behavioral trends within the cohort, together with trends over time by comparison to a previous geographically centered HIV+ cohort. METHODS: Data were collected by questionnaire at baseline visits as cross-sectional assessments. Multivariable analyses were conducted for associations of HIV status as well as age, race, and sex, on oral hygiene/recreational behaviors. RESULTS: HIV+ subjects had reduced brushing frequency, but increased incidence of past cleanings and frequency of dry mouth, compared to the HIV- subjects. Within the entire cohort, positive associations were identified between age and several oral hygiene practices, and between age, race, and sex for several recreational behaviors. In comparison to the historical cohort, the contemporary HIV+ cohort participated in fewer high-risk behaviors, but with similar trends for smoking and oral hygiene practices. CONCLUSION: HIV status had little association with oral hygiene and recreational behaviors despite several differences in age, race, and sex. Behavioral trends over time support a higher quality of life in people currently living with HIV.