Publications by authors named "Dennis Li"

Objective: Adolescent men who have sex with men (AMSM) have high HIV incidence and low rates of HIV testing and pre-exposure prophylaxis (PrEP) use. There are few evidence-based HIV prevention programs that meet the unique needs of AMSM. The sequential, multiple assignment, randomized trial (SMART) program is a stepped care package of increasingly intensive eHealth interventions that were developed specifically for English- and Spanish-speaking AMSM.

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Objectives: Pre-exposure prophylaxis (PrEP) is a key biomedical intervention for ending the HIV epidemic in the United States, but its uptake is impeded by systemic barriers, including fragmented workflows and ineffective data coordination. This study aims to design PrEPLinker, a blockchain-based, client-centered platform to enhance care to address these challenges by improving care coordination and enabling clients to securely manage their identity and PrEP-related data.

Materials And Methods: Using Houston, Texas, as a use case, we conducted a needs assessment with PrEP collaborators to evaluate existing workflows and identify barriers in the PrEP care continuum.

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Introduction: The Implementation Research Logic Model (IRLM) aids users in combining, organizing, and specifying the relationships between important constructs in implementation research. The goal of the IRLM is to improve the rigor, reproducibility, and transparency of implementation research projects. The article describing the IRLM was published September 25, 2020 (, Vol 15); it has since been highly cited and included as a required element in multiple funding opportunity announcements from federal agencies.

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Article Synopsis
  • The study aims to identify key factors influencing HIV testing, diagnosis, and care linking in the U.S. through a systematic review of literature.
  • Researchers reviewed 186 articles, identifying 1,739 determinants predominantly related to HIV testing, noting that factors affecting the "inner setting" and "individuals" were the most common.
  • The findings highlight the need for implementation science frameworks, like CFIR, to enhance strategies in combating the HIV epidemic by addressing both provider and recipient perspectives.
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Background: Despite being the primary setting for HIV prevention among men who have sex with men (MSM) since the start of the epidemic, community-based organizations (CBOs) struggle to reach this historically stigmatized and largely hidden population with face-to-face interventions. HIV researchers have readily turned to the internet to deliver critical HIV education to this group, with evidence of high effectiveness and acceptability across studies. However, implementation outside of research contexts has been limited and not well studied.

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Background: There are no criteria specifically for evaluating the quality of implementation research and recommending implementation strategies likely to have impact to practitioners. We describe the development and application of the Best Practices Tool, a set of criteria to evaluate the evidence supporting HIV-specific implementation strategies.

Methods: We developed the Best Practices Tool from 2022-2023 in three phases.

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Implementation of pre-exposure prophylaxis (PrEP) to prevent HIV transmission is suboptimal in the United States. To date, the literature has focused on identifying determinants of PrEP use, with a lesser focus on developing and testing change methods to improve PrEP implementation. Moreover, the change methods available for improving the uptake and sustained use of PrEP have not been systematically categorized.

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Purpose Of Review: Despite continuous innovations and federal investment to create digital interventions addressing the HIV prevention and care continua, these interventions have not reached people in the U.S. at scale.

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Background: There are no criteria specifically for evaluating the quality of implementation research and recommend implementation strategies likely to have impact to practitioners. We describe the development and application of the Best Practices Rubric, a set of criteria to evaluate the evidence supporting implementation strategies, in the context of HIV.

Methods: We developed the Best Practices Rubric from 2022-2023 in three phases.

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Article Synopsis
  • Many people are really interested in learning about dissemination and implementation (D&I) science, but they often get confused about what "D" and "I" mean and how they help public health.
  • To make things clearer, researchers created a visual tool called the D&I Bridge, which shows how D&I science connects what we know about public health to what we actually do to help people.
  • The D&I Bridge covers four key gaps, helping people understand how different strategies and knowledge can make public health better and making it easier for newcomers to get involved in D&I projects.
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Background: Implementation science groups change methods into two categories: (1) clinical, behavioral, or biomedical intervention targeting recipient's health outcomes and (2) implementation strategies targeting the delivery system. Differentiating interventions from strategies based on their intended functions is critical to accurately attributing their effects to health or implementation outcomes. However, in coordinating 200+ HIV implementation research projects and conducting systematic reviews, we identified change methods that had characteristics of both interventions and strategies that were inconsistently categorized.

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We examined the acceptability of Humpr - an interactive, online tool developed to educate adolescent sexual minority males (ASMM) about how to safely navigate sexual networking applications (SNA). We developed Humpr as part of a larger HIV intervention trial in the U.S.

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Men who have sex with men (MSM) are disproportionately affected by HIV, accounting for two-thirds of HIV cases in the United States despite representing ∼5% of the adult population. Delivery and use of existing and highly effective HIV prevention and treatment strategies remain suboptimal among MSM. To summarize the state of the science, we systematically review implementation determinants and strategies of HIV-related health interventions using implementation science frameworks.

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Introduction: Despite decreased rates of new infections, HIV/AIDS continues to impact certain US populations. In order to achieve the goals laid out in the Ending the HIV Epidemic (EHE) in the US initiative, implementation science is needed to expand the sustained use of effective prevention and treatment interventions, particularly among priority populations at risk for and living with HIV/AIDS. Over 200 HIV-related implementation studies have been funded by the US National Institutes of Health.

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Background: Despite evidence that eHealth approaches can be effective in reducing HIV risk, their implementation requirements for public health scale up are not well established, and effective strategies to bring these programs into practice are still unknown. Keep It Up! (KIU!) is an online program proven to reduce HIV risk among young men who have sex with men (YMSM) and ideal candidate to develop and evaluate novel strategies for implementing eHealth HIV prevention programs. KIU! 3.

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We conducted a scoping review of contextual factors impeding uptake and adherence to pre-exposure prophylaxis in transgender communities as an in-depth analysis of the transgender population within a previously published systematic review. Using a machine learning screening process, title and abstract screening, and full-text review, the initial systematic review identified 353 articles for analysis. These articles were peer-reviewed, implementation-related studies of PrEP in the U.

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Background: Delivery and use of HIV pre-exposure prophylaxis (PrEP) are suboptimal in the United States. Previous reviews of barriers and facilitators have not used an implementation science lens, limiting comprehensiveness and the link to implementation strategies. To summarize the state of the science, we systematically reviewed determinants of PrEP implementation using the updated Consolidated Framework for Implementation Research (CFIR 2.

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Background: The US government created an initiative to end the HIV epidemic in the United States by the year 2030 (EHE). This multiagency initiative was structured around four pillars: Prevent, Diagnose, Treat, and Respond to improve HIV programs, resources, and service delivery infrastructure. In support of its research mission, the National Institutes of Health (NIH) has funded implementation research (IR) projects by addressing the four pillars and encouraging investigators to collaborate with local partners and Health and Human Services (HHS) grantees in 57 priority jurisdictions.

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Article Synopsis
  • - The Ending the HIV Epidemic (EHE) initiative aims to nearly eliminate new HIV infections in the U.S. by 2030, focusing on effective and equitable implementation of existing diagnostic, prevention, and treatment tools.
  • - To aid in this goal, the NIH launched the Implementation Science Coordination Initiative (ISCI), which provides technical assistance for NIH-funded projects and aims to convert local implementation knowledge into broader insights.
  • - The findings and strategies developed through ISCI and related studies are compiled in a supplement issue that highlights the collective efforts of researchers and partners to enhance the implementation of evidence-based HIV interventions to meet the EHE goals.
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Importance: In the United States, adolescents who are lesbian, gay, or bisexual (LGB) face disparities across physical and mental health outcomes compared with non-LGB youth, yet few studies have looked at patterns of health care utilization by sexual orientation.

Objective: To compare health care utilization indicators for LGB and non-LGB youth.

Design, Setting, And Participants: This cohort study analyzed wave 3 data from Healthy Passages, a longitudinal observational study of diverse public school students in Birmingham, Alabama; Houston, Texas; and Los Angeles County, California.

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Background: Numerous models, frameworks, and theories exist for specific aspects of implementation research, including for determinants, strategies, and outcomes. However, implementation research projects often fail to provide a coherent rationale or justification for how these aspects are selected and tested in relation to one another. Despite this need to better specify the conceptual linkages between the core elements involved in projects, few tools or methods have been developed to aid in this task.

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Little is known about how to best implement eHealth HIV interventions for adolescent men who have sex with men (AMSM) in real-world settings. In response, our current study describes formative implementation research with community-based organizations (CBOs) in preparation for future implementation of the SMART Program, a stepped-care package of three interventions adapted for AMSM. In-depth interviews focusing on eHealth implementation were conducted with a convenience sample of 12 stakeholders from nine CBOs that actively implemented sexual-minority-focused HIV/AIDS prevention programs.

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Background: Adolescent men who have sex with men (AMSM), aged 13 to 18 years, account for more than 80% of teen HIV occurrences. Despite this disproportionate burden, there is a conspicuous lack of evidence-based HIV prevention programs. Implementation issues are critical as traditional HIV prevention delivery channels (eg, community-based organizations, schools) have significant access limitations for AMSM.

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Adolescent men who have sex with men (AMSM) experience a dramatic health disparity in HIV, accounting for over 80% of new diagnoses among youth. Current evidence-based HIV prevention programs, however, focus primarily on adults and heterosexual youth, thereby missing the unique experiences and socio-environmental contexts of AMSM aged 13-18. To address these gaps, we used the Intervention Mapping (IM) protocol to developmentally adapt an existing evidence-based online HIV risk reduction program (i.

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