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M. Chris Gibbons

Bio: M. Chris Gibbons is an academic researcher from Johns Hopkins University. The author has contributed to research in topics: Population & Health care. The author has an hindex of 13, co-authored 26 publications receiving 1392 citations.

Papers
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Journal ArticleDOI
15 Jan 2008-Cancer
TL;DR: The results indicated that underrepresented populations face numerous barriers to participation in cancer‐related trials, and the available evidence had limitations in quality regarding representativeness, justification of study methods, the reliability and validity of data‐collection methods, potential for bias, and data analysis.
Abstract: Racial and ethnic minorities, older adults, rural residents, and individuals of low socioeconomic status are underrepresented among participants in cancer-related trials. The authors conducted a systematic review to determine the barriers to participation of underrepresented populations in cancer-related trials. Their search included English-language publications that reported original data on the recruitment of underrepresented groups to cancer treatment or prevention trials between 1966 and December 2005 in multiple electronic databases. They also hand-searched titles in 34 journals from January 2003 to December 2005 and they examined reference lists for eligible articles. Titles and abstracts were reviewed to identify relevant studies. Data on barriers to participation were synthesized both qualitatively and based on statistically significant associations with trial enrollment. Of 5257 studies that were cited, 65 studies were eligible for inclusion in the current analysis, including 46 studies on recruitment into cancer therapeutic trials, 15 studies on recruitment into prevention trials, and 4 studies on recruitment into both prevention and treatment trials. Numerous factors were reported as barriers to participation in cancer-related trials. However, only 20 of the studies reported statistically significant associations between hypothesized barriers and enrollment. The available evidence had limitations in quality regarding representativeness, justification of study methods, the reliability and validity of data-collection methods, potential for bias, and data analysis. The results indicated that underrepresented populations face numerous barriers to participation in cancer-related trials. The current systematic review highlighting the literature on recruitment of underrepresented populations to cancer trials and may be used as the evidence base toward developing an agenda for etiologic and intervention research to reduce the disparities in participation in cancer-related trials.

865 citations

Journal ArticleDOI
01 Feb 2007-Cancer
TL;DR: The purpose of the current systematic review was to describe provider‐related factors influencing recruitment of underrepresented populations to cancer clinical trials.
Abstract: BACKGROUND. Providers play a vital role in the successful recruitment of underrepresented patients to cancer clinical trials because they often introduce the opportunity of clinical trials. The purpose of the current systematic review was to describe provider-related factors influencing recruitment of underrepresented populations to cancer clinical trials. METHODS. To find original studies on the recruitment of underrepresented populations to cancer clinical trials, electronic databases from January 1966 to December 2005 were searched; hand-searched titles in 34 journals from January 2003 to January 2006; and reference lists were examined of eligible articles. Title and abstract reviews were conducted to identify relevant studies. Potential articles were then abstracted using a structured instrument and a serial review process by 2 investigators. RESULTS. Eighteen studies were eligible for review: 13 targeted healthcare providers, 3 targeted patients/participants, and 2 targeted both providers and patients. The study designs included randomized controlled trial, concurrent controlled trial, case-control, descriptive, and qualitative. A lack of available protocols and/or a lack of provider awareness about clinical trials prevented providers from discussing the opportunity of clinical trials in 2 studies. In 14 studies, patient accrual was affected by provider attitudinal barriers relating to patient adherence to the study protocol, patient mistrust of research, patient costs, data collection costs, and/or patient eligibility. Providers' communication methods were barriers in 5 studies and promoters in 1 study. CONCLUSIONS. A heterogeneous body of evidence suggests that several provider-related factors influence recruitment of underrepresented groups to clinical trials. Future recruitment efforts should address these factors. Cancer 2007;109:465–476. © 2007 American Cancer Society.

156 citations

Journal ArticleDOI
TL;DR: The potential opportunities and challenges in leveraging Web 2.0 approaches to impact health disparities are explored and strategies for integrating social media into health promotion interventions focused on major health-related issues that affect members of medically underserved groups are identified.
Abstract: This article addresses use of the Internet and Web 2.0 technologies by racial and ethnic minorities and explores the potential opportunities and challenges in leveraging Web 2.0 approaches to impact health disparities. These opportunities and challenges include developing approaches and methods to (a) identify strategies for integrating social media into health promotion interventions focused on major health-related issues that affect members of medically underserved groups; (b) amalgamate techniques to leverage and connect social-media technologies to other evidence-informed online resources; (c) integrate health communication best practices, including addressing health literacy issues; (d) capitalize on social networking to enhance access and communication with health care providers; and (e) advance current efforts and ongoing expansion of research participation by individuals from underserved communities.

126 citations

Journal ArticleDOI
01 Aug 2011-Stroke
TL;DR: In this article, the authors investigated whether race was associated with intravenous tissue plasminogen activator (tPA) treatment for acute ischemic stroke in a predominantly black urban population.
Abstract: Background and Purpose—Some prior studies have shown that racial disparities exist in intravenous tissue plasminogen activator (tPA) use for acute ischemic stroke. We sought to determine whether race was associated with tPA treatment for stroke in a predominantly black urban population. Methods—Systematic chart abstraction was performed on consecutive hospitalized patients with ischemic stroke from all 7 acute care hospitals in the District of Columbia from February 1, 2008, to January 31, 2009. Results—Of 1044 patients with ischemic stroke, 74% were black, 19% non-Hispanic white, and 5% received intravenous tPA. Blacks were one third less likely than whites to receive intravenous tPA (3% versus 10%, P<0.001). However, blacks were also less likely than whites to present within 3 hours of symptom onset (13% versus 21%, P=0.004) and also less likely to be tPA-eligible (5% versus 13%, P<0.001). Of those who presented within 3 hours, blacks were almost half as likely to be treated with intravenous tPA than wh...

81 citations

Journal ArticleDOI
TL;DR: There is limited evidence for efficacious or effective strategies to recruit underrepresented populations in cancer-related trials and the available evidence cannot be generalized to these heterogeneous groups.
Abstract: Background Certain populations, including racial and ethnic minorities and older persons, have had a history of low participation in cancer-related trials, yet there has been little information reported on recruitment strategies tailored to improve their enrollment.Methods We conducted a systematic literature review to examine the methods used to study recruitment of underrepresented populations into cancer prevention and treatment trials and examined the studies that compared the efficacy and/or effectiveness of different recruitment strategies. We performed an electronic search through multiple databases including PubMed and a hand search of 34 journals. Potential studies were pulled and underwent title, abstract, and article review by at least two investigators.Results Fourteen articles examined recruitment of underrepresented populations into cancer trials and, of these, five compared efficacy or effectiveness of different strategies for recruitment of underrepresented populations into randomized or c...

77 citations


Cited by
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Journal ArticleDOI
09 Jan 2013-BMJ
TL;DR: The SPIRIT 2013 Explanation and Elaboration paper provides important information to promote full understanding of the checklist recommendations and strongly recommends that this explanatory paper be used in conjunction with the SPIRit Statement.
Abstract: High quality protocols facilitate proper conduct, reporting, and external review of clinical trials. However, the completeness of trial protocols is often inadequate. To help improve the content and quality of protocols, an international group of stakeholders developed the SPIRIT 2013 Statement (Standard Protocol Items: Recommendations for Interventional Trials). The SPIRIT Statement provides guidance in the form of a checklist of recommended items to include in a clinical trial protocol. This SPIRIT 2013 Explanation and Elaboration paper provides important information to promote full understanding of the checklist recommendations. For each checklist item, we provide a rationale and detailed description; a model example from an actual protocol; and relevant references supporting its importance. We strongly recommend that this explanatory paper be used in conjunction with the SPIRIT Statement. A website of resources is also available (www.spirit-statement.org). The SPIRIT 2013 Explanation and Elaboration paper, together with the Statement, should help with the drafting of trial protocols. Complete documentation of key trial elements can facilitate transparency and protocol review for the benefit of all stakeholders.

3,108 citations

Book
05 Jun 2013
TL;DR: The knowledge and tools exist to put the health system on the right course to achieve continuous improvement and better quality care at a lower cost, and a better use of data is a critical element of a continuously improving health system.
Abstract: America's health care system has become too complex and costly to continue business as usual. Best Care at Lower Cost explains that inefficiencies, an overwhelming amount of data, and other economic and quality barriers hinder progress in improving health and threaten the nation's economic stability and global competitiveness. According to this report, the knowledge and tools exist to put the health system on the right course to achieve continuous improvement and better quality care at a lower cost.The costs of the system's current inefficiency underscore the urgent need for a systemwide transformation. About 30 percent of health spending in 2009--roughly $750 billion--was wasted on unnecessary services, excessive administrative costs, fraud, and other problems. Moreover, inefficiencies cause needless suffering. By one estimate, roughly 75,000 deaths might have been averted in 2005 if every state had delivered care at the quality level of the best performing state. This report states that the way health care providers currently train, practice, and learn new information cannot keep pace with the flood of research discoveries and technological advances.About 75 million Americans have more than one chronic condition, requiring coordination among multiple specialists and therapies, which can increase the potential for miscommunication, misdiagnosis, potentially conflicting interventions, and dangerous drug interactions. Best Care at Lower Cost emphasizes that a better use of data is a critical element of a continuously improving health system, such as mobile technologies and electronic health records that offer significant potential to capture and share health data better. In order for this to occur, the National Coordinator for Health Information Technology, IT developers, and standard-setting organizations should ensure that these systems are robust and interoperable. Clinicians and care organizations should fully adopt these technologies, and patients should be encouraged to use tools, such as personal health information portals, to actively engage in their care.This book is a call to action that will guide health care providers; administrators; caregivers; policy makers; health professionals; federal, state, and local government agencies; private and public health organizations; and educational institutions.

1,324 citations

Journal ArticleDOI
TL;DR: The neurocognitive changes observed in normal aging are described, followed by a description of the structural and functional alterations seen in aging brains.

1,253 citations

Journal ArticleDOI
TL;DR: Greater comparative understanding of barriers and facilitators to racial/ethnic minorities' research participation can improve population-specific recruitment and retention strategies and could better inform future large-scale prospective quantitative and in-depth ethnographic studies.
Abstract: To assess the experienced or perceived barriers and facilitators to health research participation for major US racial/ethnic minority populations, we conducted a systematic review of qualitative and quantitative studies from a search on PubMed and Web of Science from January 2000 to December 2011. With 44 articles included in the review, we found distinct and shared barriers and facilitators. Despite different expressions of mistrust, all groups represented in these studies were willing to participate for altruistic reasons embedded in cultural and community priorities. Greater comparative understanding of barriers and facilitators to racial/ethnic minorities' research participation can improve population-specific recruitment and retention strategies and could better inform future large-scale prospective quantitative and in-depth ethnographic studies.

1,023 citations