Translational Medical Research Commons^™

Regulation Of Pten Inhibition By The Pleckstrin Homology Domain Of P-Rex2 During Insulin Signaling And Glucose Homeostasis, Cindy Hodakoski, Benjamin D. Hopkins, Douglas Barrows, Sarah M. Mense, Megan Keniry, Karen E. Anderson, Philip A. Kern, Phillip T. Hawkins, Len R. Stephens, Ramon Parsons

Clinical and Translational Science Faculty Publications

Insulin activation of phosphoinositide 3-kinase (PI3K) signaling regulates glucose homeostasis through the production of phosphatidylinositol 3,4,5-trisphosphate (PIP3). The dual-specificity phosphatase and tensin homolog deleted on chromosome 10 (PTEN) blocks PI3K signaling by dephosphorylating PIP3, and is inhibited through its interaction with phosphatidylinositol 3,4,5-trisphosphate-dependent Rac exchanger 2 (P-REX2). The mechanism of inhibition and its physiological significance are not known. Here, we report that P-REX2 interacts with PTEN via two interfaces. The pleckstrin homology (PH) domain of P-REX2 inhibits PTEN by interacting with the catalytic region of PTEN, and the inositol polyphosphate 4-phosphatase domain of P-REX2 provides high-affinity binding to the postsynaptic …

Implementation Plan For Emr And Beyond, Lori Katterhagen

Doctor of Nursing Practice (DNP) Projects

Change is never easy for anyone, but how we implement change can make the difference in how an innovation is accepted. Over the last two years, a small community hospital in California has introduced a new electronic medical record (EMR) to meet the requirements of meaningful use mandated by the Centers for Medicare and Medicaid (CMS) for all hospitals across the United States. EMRs are expected to improve quality in many areas, especially to improve outcomes, while safely reducing costs (U.S. Department of Health & Human Services, 2012). Adoption of EMR’s is not optional, if facilities want to avoid penalties …

The Design, Implementation And Evaluation Of A Technology Solution To Improve Discharge Planning Communication In A Complex Patient Population, Susan M. Manfredi

Doctor of Nursing Practice (DNP) Projects

Unnecessary delays in discharge planning can extend the length of stay (LOS) and add non-reimbursable days for socially and medically complex patients thereby increasing the financial burden to healthcare organizations. The literature supports enhanced discharge communication strategies and the use of checklists to facilitate safe and timely discharges. Following root cause analyses of significant discharge delays, one hospital identified gaps in communication as key precursors associated with discharge planning breakdown when discharging patients to skilled nursing facilities. Review of these events demonstrated the need for concurrent communication strategies between multidisciplinary care team members in planning for complex discharges.

Following a …

Nanospiderwebs: Artificial 3d Extracellular Matrix From Nanofibers By Novel Clinical Grade Electrospinning For Stem Cell Delivery, Mohammad Alamein, Qin Liu, Sebastien Stephens, Stuart Skabo, Frauke Warnke, Robert Bourke, Peter Heiner, Patrick Warnke

Qin Liu

Novel clinical grade electrospinning methods could provide three-dimensional (3D) nanostructured biomaterials comprising of synthetic or natural biopolymer nanofibers. Such advanced materials could potentially mimic the natural extracellular matrix (ECM) accurately and may provide superior niche-like spaces on the subcellular scale for optimal stem-cell attachment and individual cell homing in regenerative therapies. The goal of this study was to design several novel “nanofibrous extracellular matrices” (NF-ECMs) with a natural mesh-like 3D architecture through a unique needle-free multi-jet electrospinning method in highly controlled manner to comply with good manufacturing practices (GMP) for the production of advanced healthcare materials for regenerative medicine, and …

A Clinically-Feasible Protocol For Using Human Platelet Lysate And Mesenchymal Stem Cells In Regenerative Therapies, Patrick Warnke, Andreas Humpe, Dirk Strunk, Sebastien Stephens, Frauke Warnke, Jorge Wiltfang, Katharina Schallmoser, Mohammad Alamein, Robert Bourke, Peter Heiner, Qin Liu

Qin Liu

The transplantation of human stem cells seeded on biomaterials holds promise for many clinical applications in cranio-maxillo-facial tissue engineering and regenerative medicine. However, stem cell propagation necessary to produce sufficient cell numbers currently utilizes fetal calf serum (FCS) as a growth supplement which may subsequently transmit animal pathogens. Human platelet lysate (HPL) could potentially be utilized to produce clinical-grade stem cell-loaded biomaterials as an appropriate FCS substitute that is in line with clinically-applicable practice. The goal of this study was to investigate whether HPL can be successfully used to propagate human mesenchymal stem cells (HMSCs) seeded on clinically-approved collagen materials …

Exploring Accuracy In Journalism Stories Reporting On Neuroscience Research Findings: A Comparative Case Study, Andrea M. Campbell-Davison

Electronic Thesis and Dissertation Repository

Abstract

Neuroscience has seen explosive growth in research and public interest, but research findings are often reported inaccurately, impacting public understanding. Exploratory descriptive case study methods were used to analyze two peer reviewed research articles, one on brain imaging for patients in a Persistent Vegetative State (PVS), and another on Brain Training (BT), and all journalism stories regarding these two studies. Statistical and content analyses were used to analyze the accuracy of the translation of the research into journalism stories. PVS research received more media attention and this reporting was less accurate than for BT research; the information was also …

Acceptance Of Disability And Its Predictors Among Stroke Patients In Taiwan, Shan-Yun Chiu, Hanoch Livneh, Long-Lung Tsao, Tzung-Yi Tsai

Counselor Education Faculty Publications and Presentations

Background: Modern medicine has increased the survival rate for stroke patients; however, the patient’s psychosocial adaptation after stroke onset may be related to the clinical outcomes. This study aimed to investigate patients’ acceptance of disability (AOD) and its predictors in stroke patients. Methods: This cross-sectional study used a purposive sampling method to recruit 175 stroke patients from a hospital in southern Taiwan. A structured questionnaire gathered data on respondent demographics and disease characteristics, and included the Chinese version of the AOD Scale-Revised. Factors associated with AOD were examined by a multiple linear regression analysis. Results: The mean AOD score was …

Re-Cognizing Power In The Culture Of Dementia Care Knowledge, Ryan T. Deforge

Electronic Thesis and Dissertation Repository

In light of increasing system demands, system regulations, and constrained resources, those living and working with dementia in the long-term care sector are vulnerable to oppressive care practices. This is true so long as our understanding of how social power affects the ways in which dementia care knowledge is created, shared, and enacted remains limited. Based on prolonged field observations and on informal and formal interviews with care recipients, family members, and staff, the aim of this critical qualitative research was to examine the culture of dementia care knowledge in two sites: a specialized dementia care unit in a long-term …

Poor Description Of Non-Pharmacological Interventions: Analysis Of Consecutive Sample Of Randomised Trials, Tammy Hoffmann, Chrissy Erueti, Paul Glasziou

Chrissy Erueti

Objectives: To evaluate the completeness of descriptions of non-pharmacological interventions in randomised trials, identify which elements are most frequently missing, and assess whether authors can provide missing details. Design: Analysis of consecutive sample of randomised trials of non-pharmacological interventions. Data sources and study selection: All reports of randomised trials of non-pharmacological interventions published in 2009 in six leading general medical journals; 133 trial reports, with 137 interventions, met the inclusion criteria. Data collection Using an eight item checklist, two raters assessed the primary full trial report, plus any reference materials, appendices, or websites. Questions about missing details were emailed to …

Up North They’Re Talking Sex: A Collaborative And Community Driven Model For Sexual Health Knowledge Mobilization, Karen Edwards, Steve Mitchell Phd, Nancy Gibson Phd, Cecilia Zoe-Martin, Anita Daniels, Jim Martin, Patrick Wansbrough Rn

Journal of Health Disparities Research and Practice

To address high STI rates in their aboriginal communities, the Tłı̨chǫ of the Northwest Territories adopted a collaborative participatory research approach to sexual health based on four key stages of development. First was community initiation and engagement, where local leaders identified a priority need and began community discussions around sexual health. Secondly, identifying that existing government statistics did not provide them with adequate information, the Tlicho Community Services Agency partnered with the University of Alberta and CIETcanda to conduct a baseline study in all four Tlicho communities, designed and administered by community-based researchers. Third, a community action research team (CART) …

Identification Of A Human Monoclonal Antibody To Replace Equine Diphtheria Anti-Toxin For The Treatment Of Diphtheria, Leila M. Sevigny, Brian J. Booth, Kirk J. Rowley, Brett A. Leav, Peter S. Cheslock, Kerry A. Garrity, Susan Sloan, Gregory J. Babcock, William D. Thomas, Mark Klempner, Yang Wang

William D Thomas Jr

Diphtheria anti-toxin (DAT) has been used to treat Corynebacterium diphtheriae infection for over one hundred years. While the global incidence of diphtheria has declined in the 20th century, the disease remains endemic in many parts of the world and significant outbreaks still occur. Diphtheria anti-toxin is an equine polyclonal antibody with considerable side effects that is in critically short supply globally. A safer, more readily available alternative to DAT would be desirable. In the current study, we cloned human monoclonal antibodies (HuMabs) directly from antibody secreting cells of human volunteers immunized with Td vaccine. We isolated a diverse panel of …

A Baseline Assessment Of University Students’ Vitamin D Knowledge, Shaunessey Boland

Electronic Thesis and Dissertation Repository

Vitamin D is necessary for many aspects of health and development yet 25% of Canadians are not getting enough and university-aged students are at particularly high risk of insufficiency. It seems program development is needed to help university students in acquiring adequate vitamin D. The purpose of this study was to acquire a baseline assessment of university students’ vitamin D related knowledge to help inform future program development. Subjects were asked to complete a Vitamin D Knowledge Survey which assessed knowledge on aspects such as vitamin D sources, health benefits, and recommended intake. A Vitamin D Knowledge Score was computed …

Therapeutic Approaches To Aggressive Carcinomas Based On A Novel Vegf/Neuropilin Autocrine Pathway, Hira Lal Goel, Arthur M. Mercurio

Arthur M. Mercurio

Summary: Autocrine VEGF signaling in tumor cells contributes to de-differentiation and function of tumor initiating/stem cells. NRP2 is the nexus of a signaling pathway that promotes de-differentiation and sustains tumor initiating/stem sells. Anti-NRP2 therapy is worth pursuing, especially for high-grade cancers. Therapeutic Abs are available. This presentation was part of the retreat mini-symposium entitled: Biomarker Discovery and Targeted Therapeutics in Cancer.

Expert–Novice Differences In Mental Models Of Viruses, Vaccines, And The Causes Of Infectious Disease, Benjamin D. Jee, David H. Uttal, Amy N. Spiegel, Judy Diamond

World of Viruses

Humans are exposed to viruses everywhere they live, play, and work. Yet people’s beliefs about viruses may be confused or inaccurate, potentially impairing their understanding of scientific information. This study used semi-structured interviews to examine people’s beliefs about viruses, vaccines, and the causes of infectious disease. We compared people at different levels of science expertise: middle school students, teachers, and professional virologists. The virologists described more entities involved in microbiological processes, how these entities behaved, and why. Quantitative and qualitative analyses revealed distinctions in the cognitive organization of several concepts, including infection and vaccination. For example, some students and teachers …

Adverse Drug Events Post-Hospital Discharge In Older Patients: Types, Severity, And Involvement Of Beers Criteria Medications, Abir O. Kanaan, Jennifer L. Donovan, Nerissa P. Duchin, Terry S. Field, Jennifer Tjia, Sarah L. Cutrona, Shawn J. Gagne, Lawrence D. Garber, Peggy Preusse, Leslie R. Harrold, Jerry H. Gurwitz

Lawrence D. Garber

Objective: To characterize adverse drug events (ADEs) occurring within the high-risk 45-day period post-hospitalization in older adults.

Design: Clinical pharmacists reviewed the ambulatory records of 1000 consecutive discharges.

Setting: A large multispecialty group practice closely aligned with a Massachusetts-based health plan.

Participants: Hospitalized patients aged 65 years and older who were discharged to home.

Measurements: Possible drug-related incidents occurring during the 45-day period post-hospitalization were identified and presented to a pair of physician-reviewers who classified incidents as to whether an ADE was present, whether the event was preventable, and the severity of the event. Medications implicated in ADEs were further …

Adverse Drug Events Post-Hospital Discharge In Older Patients: Types, Severity, And Involvement Of Beers Criteria Medications, Abir O. Kanaan, Jennifer L. Donovan, Nerissa P. Duchin, Terry S. Field, Jennifer Tjia, Sarah L. Cutrona, Shawn J. Gagne, Lawrence D. Garber, Peggy Preusse, Leslie R. Harrold, Jerry H. Gurwitz

Jennifer Tjia

Objective: To characterize adverse drug events (ADEs) occurring within the high-risk 45-day period post-hospitalization in older adults.

Design: Clinical pharmacists reviewed the ambulatory records of 1000 consecutive discharges.

Setting: A large multispecialty group practice closely aligned with a Massachusetts-based health plan.

Participants: Hospitalized patients aged 65 years and older who were discharged to home.

Measurements: Possible drug-related incidents occurring during the 45-day period post-hospitalization were identified and presented to a pair of physician-reviewers who classified incidents as to whether an ADE was present, whether the event was preventable, and the severity of the event. Medications implicated in ADEs were further …

Dissemination Of Evidence-Based Atypical Antipsychotic Information To Nursing Homes, Celeste A. Lemay, Jennifer Tjia, Kathleen M. Mazor, Terry S. Field, Abir O. Kanaan, Jennifer L. Donovan, Jerry H. Gurwitz

Jennifer Tjia

Background: Accumulating evidence demonstrates minimal benefit and increased risk of off-label use of atypical antipsychotic medications for dementia-related behaviors. Optimal strategy for disseminating evidence-based guides to nursing home (NH) stakeholders is unclear. Our objective is to describe the impact of differing dissemination efforts in Connecticut NHs.

Methods: Forty-three Connecticut NHs were randomized to one of 3 arms receiving incrementally intensive dissemination strategies of the Agency for Healthcare Research and Quality Comparative Effectiveness Review Summary Guide on the off-label use of atypical antipsychotic drugs, which was included in a toolkit informed by a needs assessment of NHs. All NHs received the …

Reducing Rehospitalizations Through Automated Alerts To Primary Care Providers And Staff When Older Patients Are Discharged From The Hospital: A Randomized Trial, Jerry H. Gurwitz, Terry S. Field, Jessica Ogarek, Jennifer Tjia, Sarah L. Cutrona, Leslie R. Harrold, Jennifer L. Donovan, Abir O. Kanaan, Shawn J. Gagne, Peggy Preusse, Lawrence D. Garber

Jennifer Tjia

Background: Inadequate continuity of care places older patients at very high risk during transitions from the hospital to ambulatory setting.

Methods: We conducted a randomized controlled trial of an HIT-based transitional care intervention in patients aged 65 and older discharged from hospital to home. All patients were senior plan members of a Massachusetts-based health plan, and cared for by a multispecialty medical group using the EpicCare Ambulatory Medical Record. In addition to notifying providers about the patient’s recent transition, the system provided information about new drugs added during the inpatient stay, warnings about drug-drug interactions, recommendations for dose changes and …

Understanding Antipsychotic Drug Use In The Nursing Home Setting, Celeste A. Lemay, Alice F. Bonner, Christina Compher, Terry S. Field, Jonathan Freedlander, Susan Joslin, Kathleen M. Mazor, Jennifer Tjia, Jerry H. Gurwitz

Jennifer Tjia

Introduction: The increasing prevalence of antipsychotic medication use in residents of nursing homes (NH) in the absence of psychiatric diagnoses is concerning. To address these concerns, it is essential to explore how these medications are being prescribed and managed in the NH setting. Our objectives were to understand the decision-making process that influences prescribing and factors that trigger administration of antipsychotic medications to residents with dementia in NHs and to explore why residents remain on antipsychotic medications over an extended period of time.

Methods: Interviews with prescribers, caregivers, and family members, on-site observations in study facilities, and review of NH …

Intervention To Reduce Adverse Outcomes Among Older Adults Discharged From Skilled Nursing Facilities To Home, Terry S. Field, Jessica Ogarek, Abir O. Kanaan, Jennifer L. Donovan, Peggy Preusse, Devi Sundaresan, Shawn J. Gagne, Lawrence D. Garber, Jennifer Tjia, Sarah L. Cutrona, Jerry H. Gurwitz

Jennifer Tjia

Background: Older adults may be at risk for adverse outcomes after discharge from skilled nursing facilities (SNF), but little research has focused on this transition.

Objective: To assess the impact of an alert system on the rates of adverse outcomes among older adults discharged from SNFs to home.

Methods: Within a multispecialty group practice, we tracked 30-day re-hospitalizations after SNF discharges during an intervention that provided discharge alerts to primary care physicians. We compared them to discharges from the pre-intervention period matched on age, gender and SNF. For the first 100 intervention discharges and their matches, we performed chart reviews …

Statin Discontinuation Among Nursing Home Residents With Advanced Dementia, Jennifer Tjia, Sarah L. Cutrona, Daniel J. Peterson, Becky A. Briesacher

Jennifer Tjia

Background: Statin use in elderly individuals with life-limiting illness such as advanced dementia is controversial.

Objective: To describe factors associated with statin discontinuation and estimate impact of discontinuation on 28-day hospitalizations in nursing home (NH) residents with advanced dementia.

Methods: Retrospective cohort study of NH residents ≥ 65 years with recent progression to advanced dementia from 5 large U.S. states drawn from the 2007-2008 Minimum Data Set 2.0. We identified residents using statins. Clinical characteristics and 28-day hospitalization risk were compared for residents discontinuing and continuing statins. Multivariable Cox proportional hazard models identified factors associated with time to statin discontinuation …

Health Literacy And Cancer Prevention: It’S Not What You Say It’S What They Hear, Kathleen M. Mazor, Douglas W. Roblin, Andrew E. Williams, Paul J. K. Han, Mary E. Costanza, Sarah L. Cutrona, Terry S. Field, Bridget Gaglio, Joann L. Wagner, Brandi E. Robinson, Vinutha Vijayadeva

Mary E. Costanza

Background: A growing body of literature documents the relationship between health literacy and important health behaviors and outcomes. Most research to date has focused on print literacy–few studies have examined literacy with respect to spoken information (“spoken health literacy”). We sought to examine the extent to which responses to physician advice about cancer prevention and screening were associated with spoken health literacy.

Methods: Participants listened to 3 simulated physician-patient discussions addressing: 1) Prostate Specific Antigen (PSA) testing; 2) tamoxifen for breast cancer prevention; and 3) colorectal cancer (CRC) screening. The physician provided information on risks and benefits but did not …

Diabetes Care Trends In The Ma Patient Centered Medical Home Initiative (Ma Pcmhi) At Mid-Point, Sai Cherala, Judith Steinberg, Stephen Baker

Sai Cherala

Background: The MA PCMHI is a multi-payer demonstration involving 45 primary care practices. Thirty-one (31) practices receive additional financial support; all receive technical assistance.

Objectives: To assess data trends in diabetes quality measures from participating adult practices.

Study Design: Quality improvement study utilizing practices’ self-reported data on clinical quality measures. Diabetes measures included blood pressure, LDL cholesterol and hemoglobin A1C control and depression screening.

Methods: Monthly quality data from 38 practices reported June 2011 (baseline) through November 2012 were evaluated. Using a general linear mixed model Analysis of Variance (ANOVA), an overall comparison across time and pair-wise comparisons between times …

Barriers And Facilitators To Addressing Perinatal Depression In Obstetric Settings, Nancy Byatt, Kathleen Biebel, Liz Friedman, Gifty Debordes-Jackson, Jeroan J. Allison, Douglas M. Ziedonis

Kathleen Biebel

Background: Perinatal depression is common and can cause suffering for mother, fetus/child and family. The perinatal period is an ideal time to detect and treat depression due to regular contact between mothers and health professionals. Despite the opportune time and setting, depression is under-diagnosed and under-treated in the obstetric setting. Caring and committed providers are frustrated and confused, and mothers do not feel heard or understood by their providers.

Objectives: (1) Identify postpartum women’s perspective on how perinatal depression is addressed in obstetric settings; (2) Identify strategies for improvement of the delivery of depression care in OB/Gyn settings; and, (3) …

Rates Of Insurance For Injured Patients Before And After Health Care Reform In Massachusetts: Another Case Of Double Jeopardy?, Heena P. Santry, Courtney E. Collins, Jason T. Wiseman, Julie M. Flahive, Charles M. Psoinos, Zeling Chau, Shimul A. Shah, Catarina I. Kiefe

Catarina I. Kiefe

Background: As a result of healthcare reform (HCR), insurance rates among Massachusetts (MA) residents increased from 86.6% (2006) to 94.4% (2010) and conferred a 7.6% higher probability of being insured compared to neighboring states. The effect of an individual mandate on insurance rates among trauma patients is unknown.

Methods: This was retrospective analysis of adult (18-64yrs) trauma patients from MA and surrounding states (NH, RI, CT, NY, VT) treated at our level 1 trauma center in central MA before (2004-2005) and after (2009-2010) MA-HCR. We estimated changes in insurance rates across time-periods and state-residence.

Results: Before MA-HCR, 76.7% (1647/2,148) of …

Reducing Rehospitalizations Through Automated Alerts To Primary Care Providers And Staff When Older Patients Are Discharged From The Hospital: A Randomized Trial, Jerry H. Gurwitz, Terry S. Field, Jessica Ogarek, Jennifer Tjia, Sarah L. Cutrona, Leslie R. Harrold, Jennifer L. Donovan, Abir O. Kanaan, Shawn J. Gagne, Peggy Preusse, Lawrence D. Garber

Abir O. Kanaan

Background: Inadequate continuity of care places older patients at very high risk during transitions from the hospital to ambulatory setting.

Methods: We conducted a randomized controlled trial of an HIT-based transitional care intervention in patients aged 65 and older discharged from hospital to home. All patients were senior plan members of a Massachusetts-based health plan, and cared for by a multispecialty medical group using the EpicCare Ambulatory Medical Record. In addition to notifying providers about the patient’s recent transition, the system provided information about new drugs added during the inpatient stay, warnings about drug-drug interactions, recommendations for dose changes and …

I'M A Patient, Not A Problem: An Exploration Into The Roles Assigned In The Doctor-Patient Relationship, Monica C. Stewart

Honors Theses and Capstones

No abstract provided.

Examining Universal Primary Healthcare Through Community-Based Initiatives, Donald E. Warden

Oglethorpe Journal of Undergraduate Research

This paper examines enacting community-based primary healthcare programs and initiatives. It looks at the weaknesses of past attempts, the successes of current attempts, and gives insight into ways everyday citizens can change the way the world does healthcare. There are social, economic, and political barriers as to why these programs are not enacted. Since 1978, Member states of the United Nations strive towards healthcare for all. The original 1978 Declaration of Alma-Ata sets the bar at achieving this goal by the year 2000. Now in the 21^st century, the world still battles inadequate healthcare. Nations continue to strive towards …

Omega-3 Fatty Acids Reduce Adipose Tissue Macrophages In Human Subjects With Insulin Resistance, Michael Spencer, Brian S. Finlin, Resat Unal, Beibei Zhu, Andrew J. Morris, Lindsey R. Shipp, Jonah D. Lee, R. Grace Walton, Akosua Adu, Rod Erfani, Marilyn S. Campbell, Robert E. Mcgehee Jr., Charlotte A. Peterson, Philip A. Kern

Clinical and Translational Science Faculty Publications

Fish oils (FOs) have anti-inflammatory effects and lower serum triglycerides. This study examined adipose and muscle inflammatory markers after treatment of humans with FOs and measured the effects of ω-3 fatty acids on adipocytes and macrophages in vitro. Insulin-resistant, nondiabetic subjects were treated with Omega-3-Acid Ethyl Esters (4 g/day) or placebo for 12 weeks. Plasma macrophage chemoattractant protein 1 (MCP-1) levels were reduced by FO, but the levels of other cytokines were unchanged. The adipose (but not muscle) of FO-treated subjects demonstrated a decrease in macrophages, a decrease in MCP-1, and an increase in capillaries, and subjects with the most …

Stay Beautiful -- Stay Alive: Assessing The Receptivity Of African American Beauty Salon Owners To The Integration Of Breast Cancer Intervention Programs Into Salon Operations, Funmi Apantaku-Onayemi

Ed.D. Dissertations

The lower incidence rate of breast cancer in African American women is dwarfed by the excessive number of deaths due to late diagnosis and treatment. Lack of screening, socioeconomic factors, fatalistic beliefs and inequality of care are major contributing factors. Studies have suggested that those who had more knowledge about breast cancer are more likely to have reduced fatalistic attitudes and engage in screening behaviors. This study investigated beauty salons as sustainable and viable venues to reach women with health intervention programs because they fit the prescriptions of the principles of adult learning. In a mixed-method, descriptive study involving 115 …