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Robert A Ladner

Datos Biográficos

ID231432
NOMBRERobert A Ladner
NOMBRESRobert A
APELLIDOLadner
FIRMALADNER R A
AFILIACIONESBehavioral Science Research Corporation PhD, is president, , Coral Gables, FL, USA
ORCID0000-0002-8746-0557
VERIFICADOSí
TOTAL DE OBRAS18
TOTAL DE CITAS5
TOTAL COMO AUTOR18
TOTAL COMO EDITOR0
PRIMER AÑO DE PUBLICACIÓN1975
AÑO MÁS RECIENTE DE PUBLICACIÓN2026
ÍNDICE H1
  • Using Dynamic Causal Bayesian Networks to Assess the Role of Patient-Centered Care and Individual-Level Barriers on Viral Suppression Changes Among a Cohort of People with HIV

    Open Access•Mary Jo Trepka, Samantha Gonzales et al.•ARTICLE•AIDS and Behavior•2026

    To assess the impact of changes in barriers to HIV viral suppression and the moderating role of patient-provider relationships, we conducted a retrospective cohort study using dynamic causal Bayesian network analyses on the first two available needs assessments between May 2020 and December 2022 for clients of the Miami-Dade County Ryan White Program (RWP) Part A Program. A cohort of 1539 individuals was formed using data from the RWP medical cas…

  • Race- and ethnicity-specific patient-provider relationship characteristics associated with antiretroviral therapy adherence and viral suppression among minority women with HIV, Miami-Dade County, Flor…

    Open Access•Ekpereka S Nawfal, Aaliyah Gray et al.•ARTICLE•AIDS Care•2025

    We conducted a cross-sectional study to examine the associations between items of the patient-provider relationship measures and antiretroviral therapy (ART) adherence and viral suppression within each of three ethnic groups of women with HIV (WHIV) - Hispanic, Haitian, and African American - using data from 542 WHIV enrolled in the Miami-Dade County Ryan White Program. Univariate and multivariable logistic regression models were applied for each…

  • Barriers to Covid-19 vaccination and strategies to increase trust and uptake among racial and ethnic minorities with HIV in South Florida

    Open Access•Daisy Ramírez‐Ortiz, Daisy Ramírez-Ortiz et al.•ARTICLE•BMC Public Health•2025

    Vaccination efforts for PWH should prioritize addressing specific barriers and concerns related to their HIV status and tailoring strategies to meet their needs

  • Using Causal Bayesian Networks to Assess the Role of Patient-Centered Care and Psychosocial Factors on Durable HIV Viral Suppression

    Open Access•Mary Jo Trepka, Zhenghua Gong et al.•ARTICLE•AIDS and Behavior•2024

  • Sex differences in psychosocial and demographic factors associated with sustained HIV viral suppression in the Miami-Dade County Ryan White Program, 2017

    Melissa Ward‐Peterson, Sofia B Fernandez et al.•ARTICLE•AIDS Care•2023

    This exploratory study examined sex differences in psychosocial and demographic factors associated with sustained HIV viral suppression (SVS). The study population included 6,489 Miami-Dade Ryan White Program (RWP) clients receiving services during 2017; administrative data was analyzed. SVS was defined as having all viral load tests during 2017 below 200 copies/ml. Multilevel logistic regression models accounted for clustering by medical case ma…

  • Factors Associated with Geographic Patterns of Poor Sustained Viral Suppression in Miami-Dade County Florida, 2017

    Open Access•Rahel Dawit, Mary Jo Trepka et al.•ARTICLE•Journal of Racial and Ethnic…•2023

  • Increased alcohol use during the Covid-19 pandemic among people with HIV from racial/ethnic minority groups in South Florida

    Daisy Ramírez‐Ortiz, Melissa Ward‐Peterson et al.•ARTICLE•Journal of Ethnicity in Substance…•2023

    People with HIV (PWH) from racial/ethnic minority groups may be particularly vulnerable to the effects of the COVID-19 Pandemic. Exacerbated COVID-19-related stressors may lead to maladaptive coping mechanisms such as increased alcohol use. This study examined socioeconomic and psychosocial predictors of increased alcohol use during the first year of the COVID-19 Pandemic among PWH from racial/ethnic minority groups in South Florida. Data were co…

  • Predictors of chlamydia or gonorrhea among people with HIV in Miami-Dade County Ryan White Program in 2017

    Merhawi T Gebrezgi, Kristopher P Fennie et al.•ARTICLE•AIDS Care•2022

    The purpose of this study was to assess the prevalence of chlamydia or gonorrhea and factors associated with the diagnoses among people with HIV (PHIV) in the Ryan White Program Part A (RWP) in Miami-Dade County, Florida. We used 2017 calendar year data to identify factors associated with a chlamydia or gonorrhea diagnoses using logistic regression. About 50% of the 7110 PHIV who were ≥18 years old in active Ryan White care in 2017 reported being…

  • Clients’ Perspectives on Patient-Centeredness

    Open Access•Sofia B Fernandez, Melissa Ward‐Peterson et al.•ARTICLE•Journal of Racial and Ethnic…•2022

  • Examining Barriers to Medication Adherence and Retention in Care among Women Living with HIV in the Face of Homelessness and Unstable Housing

    Open Access•Sofia B Fernandez, Cindy Thai Lopez et al.•ARTICLE•International Journal of…•2022

    Despite advances in biomedical treatments, women living with HIV (WLH) who experience homelessness and housing instability suffer suboptimal HIV outcomes, even when linked to treatment. The purpose of this study was to explore experiences of housing instability among WLH and to understand its role in their ability to adhere to antiretroviral medication and remain retained in care. Sixteen women who were linked to Ryan White Program HIV care in So…

  • A Comparative Analysis of Different HIV Viral Load Suppression Definitions Among Clients Receiving Care in the Miami-Dade Ryan White HIV/Aids Program

    Open Access•Semiu O Gbadamosi, Mary Jo Trepka et al.•ARTICLE•AIDS and Behavior•2022

  • Relationship between Housing Characteristics and Care Outcomes among Women Living with HIV

    Open Access•Sofia B Fernandez, Diana M Sheehan et al.•ARTICLE•Social Work Research•2022•Citada por: 1•Referencias: 2

    Housing plays a critical role in the care outcomes of individuals living with a HIV, yet few studies have examined the unique housing profiles of women living with HIV (WLH), especially among those belonging to low-income racial/ethnic minority groups. In this study, authors conducted a latent class analysis to generate latent profiles of women ( N = 1,501) according to their housing status and household characteristics and assessed associations …

  • Development and Validation of Vulnerable and Enabling Indices for HIV Viral Suppression among People with HIV Enrolled in the Ryan White Program

    Open Access•Merhawi T Gebrezgi, Mary Jo Trepka et al.•ARTICLE•International Journal of…•2021

    General mental health, drug use, and socioeconomic indices using administrative data showed acceptable reliability, validity, and utility for non-viral suppression in an overall PLWH population and in gender- and racial/ethnic-stratified populations. These general indices may be used with similar validity and utility across gender and racial/ethnic diverse populations

  • Latent Class Analysis of Syndemic Factors Associated with Sustained Viral Suppression among Ryan White HIV/Aids Program Clients in Miami, 2017

    Open Access•Rahel Dawit, Mary Jo Trepka et al.•ARTICLE•AIDS and Behavior•2021

  • Sustained HIV viral suppression among men who have sex with men in the Miami-Dade County Ryan White Program

    Open Access•Diana M Sheehan, Rahel Dawit et al.•ARTICLE•BMC Public Health•2020

    Despite access to treatment, age and racial disparities in sustained viral suppression exist among MSM living with HIV. Addressing substance use, mental health, and social services' needs may improve the ability of MSM to sustain viral suppression long-term. Furthermore, physician characteristics may be associated with HIV outcomes and should be explored further

  • Factors Distinguishing Urban and Rural State Mental Hospital Patients in Florida

    Elane M Nuehring, Robert A Ladner•ARTICLE•The Journal of Sociology & Social…•1981•Citada por: 1

    This study compares the patients of two state mental hospitals, one serving an urban region, the other a rural district. The purpose is to explore urban and rural patient differences on background, hospital history and experience, post-release living situation, use of community mental health services, and postrelease functioning. A summary attempt to distinguish urban from rural patients using discriminant function analysis established that rural…

  • Effects of Criminal Justice and Medical Definitions of a Social Problem upon the Delivery of Treatment

    Robert S Weppner, Karen Wells et al.•ARTICLE•Journal of Health and Social…•1976•Citada por: 1

    Robert S. Weppner, Karen S. Wells, Duane C. McBride, Robert A. Ladner, Effects of Criminal Justice and Medical Definitions of a Social Problem upon the Delivery of Treatment: The Case of Drug Abuse, Journal of Health and Social Behavior, Vol. 17, No. 2 (Jun., 1976), pp. 169-176

  • Ethnic and Sex Effects on Emergency Ward Utilization for Drug-Related Problems

    Robert Ladner, Robert A Ladner et al.•ARTICLE•Journal of Health and Social…•1975•Citada por: 2

    Robert Ladner, William F. Page, Michele L. Lee, Ethnic and Sex Effects on Emergency Ward Utilization for Drug-Related Problems: A Linear Model Analysis, Journal of Health and Social Behavior, Vol. 16, No. 3 (Sep., 1975), pp. 315-325

  • Ethnic and Sex Effects on Emergency Ward Utilization for Drug-Related Problems

    Robert Ladner, Robert A Ladner et al.•ARTICLE•Journal of Health and Social…•1975•Citada por: 2

    Robert Ladner, William F. Page, Michele L. Lee, Ethnic and Sex Effects on Emergency Ward Utilization for Drug-Related Problems: A Linear Model Analysis, Journal of Health and Social Behavior, Vol. 16, No. 3 (Sep., 1975), pp. 315-325

  • Relationship between Housing Characteristics and Care Outcomes among Women Living with HIV

    Open Access•Sofia B Fernandez, Diana M Sheehan et al.•ARTICLE•Social Work Research•2022•Citada por: 1•Referencias: 2

    Housing plays a critical role in the care outcomes of individuals living with a HIV, yet few studies have examined the unique housing profiles of women living with HIV (WLH), especially among those belonging to low-income racial/ethnic minority groups. In this study, authors conducted a latent class analysis to generate latent profiles of women ( N = 1,501) according to their housing status and household characteristics and assessed associations …

  • Factors Distinguishing Urban and Rural State Mental Hospital Patients in Florida

    Elane M Nuehring, Robert A Ladner•ARTICLE•The Journal of Sociology & Social…•1981•Citada por: 1

    This study compares the patients of two state mental hospitals, one serving an urban region, the other a rural district. The purpose is to explore urban and rural patient differences on background, hospital history and experience, post-release living situation, use of community mental health services, and postrelease functioning. A summary attempt to distinguish urban from rural patients using discriminant function analysis established that rural…

  • Effects of Criminal Justice and Medical Definitions of a Social Problem upon the Delivery of Treatment

    Robert S Weppner, Karen Wells et al.•ARTICLE•Journal of Health and Social…•1976•Citada por: 1

    Robert S. Weppner, Karen S. Wells, Duane C. McBride, Robert A. Ladner, Effects of Criminal Justice and Medical Definitions of a Social Problem upon the Delivery of Treatment: The Case of Drug Abuse, Journal of Health and Social Behavior, Vol. 17, No. 2 (Jun., 1976), pp. 169-176

  • Ethnic and Sex Effects on Emergency Ward Utilization for Drug-Related Problems

    Robert Ladner, Robert A Ladner et al.•ARTICLE•Journal of Health and Social…•1975•Citada por: 2

    Robert Ladner, William F. Page, Michele L. Lee, Ethnic and Sex Effects on Emergency Ward Utilization for Drug-Related Problems: A Linear Model Analysis, Journal of Health and Social Behavior, Vol. 16, No. 3 (Sep., 1975), pp. 315-325

  • Effects of Criminal Justice and Medical Definitions of a Social Problem upon the Delivery of Treatment

    Robert S Weppner, Karen Wells et al.•ARTICLE•Journal of Health and Social…•1976•Citada por: 1

    Robert S. Weppner, Karen S. Wells, Duane C. McBride, Robert A. Ladner, Effects of Criminal Justice and Medical Definitions of a Social Problem upon the Delivery of Treatment: The Case of Drug Abuse, Journal of Health and Social Behavior, Vol. 17, No. 2 (Jun., 1976), pp. 169-176

  • Factors Distinguishing Urban and Rural State Mental Hospital Patients in Florida

    Elane M Nuehring, Robert A Ladner•ARTICLE•The Journal of Sociology & Social…•1981•Citada por: 1

    This study compares the patients of two state mental hospitals, one serving an urban region, the other a rural district. The purpose is to explore urban and rural patient differences on background, hospital history and experience, post-release living situation, use of community mental health services, and postrelease functioning. A summary attempt to distinguish urban from rural patients using discriminant function analysis established that rural…

  • Sustained HIV viral suppression among men who have sex with men in the Miami-Dade County Ryan White Program

    Open Access•Diana M Sheehan, Rahel Dawit et al.•ARTICLE•BMC Public Health•2020

    Despite access to treatment, age and racial disparities in sustained viral suppression exist among MSM living with HIV. Addressing substance use, mental health, and social services' needs may improve the ability of MSM to sustain viral suppression long-term. Furthermore, physician characteristics may be associated with HIV outcomes and should be explored further

  • Development and Validation of Vulnerable and Enabling Indices for HIV Viral Suppression among People with HIV Enrolled in the Ryan White Program

    Open Access•Merhawi T Gebrezgi, Mary Jo Trepka et al.•ARTICLE•International Journal of…•2021

    General mental health, drug use, and socioeconomic indices using administrative data showed acceptable reliability, validity, and utility for non-viral suppression in an overall PLWH population and in gender- and racial/ethnic-stratified populations. These general indices may be used with similar validity and utility across gender and racial/ethnic diverse populations

  • Latent Class Analysis of Syndemic Factors Associated with Sustained Viral Suppression among Ryan White HIV/Aids Program Clients in Miami, 2017

    Open Access•Rahel Dawit, Mary Jo Trepka et al.•ARTICLE•AIDS and Behavior•2021

  • Predictors of chlamydia or gonorrhea among people with HIV in Miami-Dade County Ryan White Program in 2017

    Merhawi T Gebrezgi, Kristopher P Fennie et al.•ARTICLE•AIDS Care•2022

    The purpose of this study was to assess the prevalence of chlamydia or gonorrhea and factors associated with the diagnoses among people with HIV (PHIV) in the Ryan White Program Part A (RWP) in Miami-Dade County, Florida. We used 2017 calendar year data to identify factors associated with a chlamydia or gonorrhea diagnoses using logistic regression. About 50% of the 7110 PHIV who were ≥18 years old in active Ryan White care in 2017 reported being…

  • Clients’ Perspectives on Patient-Centeredness

    Open Access•Sofia B Fernandez, Melissa Ward‐Peterson et al.•ARTICLE•Journal of Racial and Ethnic…•2022

  • Examining Barriers to Medication Adherence and Retention in Care among Women Living with HIV in the Face of Homelessness and Unstable Housing

    Open Access•Sofia B Fernandez, Cindy Thai Lopez et al.•ARTICLE•International Journal of…•2022

    Despite advances in biomedical treatments, women living with HIV (WLH) who experience homelessness and housing instability suffer suboptimal HIV outcomes, even when linked to treatment. The purpose of this study was to explore experiences of housing instability among WLH and to understand its role in their ability to adhere to antiretroviral medication and remain retained in care. Sixteen women who were linked to Ryan White Program HIV care in So…

  • A Comparative Analysis of Different HIV Viral Load Suppression Definitions Among Clients Receiving Care in the Miami-Dade Ryan White HIV/Aids Program

    Open Access•Semiu O Gbadamosi, Mary Jo Trepka et al.•ARTICLE•AIDS and Behavior•2022

  • Relationship between Housing Characteristics and Care Outcomes among Women Living with HIV

    Open Access•Sofia B Fernandez, Diana M Sheehan et al.•ARTICLE•Social Work Research•2022•Citada por: 1•Referencias: 2

    Housing plays a critical role in the care outcomes of individuals living with a HIV, yet few studies have examined the unique housing profiles of women living with HIV (WLH), especially among those belonging to low-income racial/ethnic minority groups. In this study, authors conducted a latent class analysis to generate latent profiles of women ( N = 1,501) according to their housing status and household characteristics and assessed associations …

  • Sex differences in psychosocial and demographic factors associated with sustained HIV viral suppression in the Miami-Dade County Ryan White Program, 2017

    Melissa Ward‐Peterson, Sofia B Fernandez et al.•ARTICLE•AIDS Care•2023

    This exploratory study examined sex differences in psychosocial and demographic factors associated with sustained HIV viral suppression (SVS). The study population included 6,489 Miami-Dade Ryan White Program (RWP) clients receiving services during 2017; administrative data was analyzed. SVS was defined as having all viral load tests during 2017 below 200 copies/ml. Multilevel logistic regression models accounted for clustering by medical case ma…

  • Factors Associated with Geographic Patterns of Poor Sustained Viral Suppression in Miami-Dade County Florida, 2017

    Open Access•Rahel Dawit, Mary Jo Trepka et al.•ARTICLE•Journal of Racial and Ethnic…•2023

  • Increased alcohol use during the Covid-19 pandemic among people with HIV from racial/ethnic minority groups in South Florida

    Daisy Ramírez‐Ortiz, Melissa Ward‐Peterson et al.•ARTICLE•Journal of Ethnicity in Substance…•2023

    People with HIV (PWH) from racial/ethnic minority groups may be particularly vulnerable to the effects of the COVID-19 Pandemic. Exacerbated COVID-19-related stressors may lead to maladaptive coping mechanisms such as increased alcohol use. This study examined socioeconomic and psychosocial predictors of increased alcohol use during the first year of the COVID-19 Pandemic among PWH from racial/ethnic minority groups in South Florida. Data were co…

  • Using Causal Bayesian Networks to Assess the Role of Patient-Centered Care and Psychosocial Factors on Durable HIV Viral Suppression

    Open Access•Mary Jo Trepka, Zhenghua Gong et al.•ARTICLE•AIDS and Behavior•2024

  • Race- and ethnicity-specific patient-provider relationship characteristics associated with antiretroviral therapy adherence and viral suppression among minority women with HIV, Miami-Dade County, Flor…

    Open Access•Ekpereka S Nawfal, Aaliyah Gray et al.•ARTICLE•AIDS Care•2025

    We conducted a cross-sectional study to examine the associations between items of the patient-provider relationship measures and antiretroviral therapy (ART) adherence and viral suppression within each of three ethnic groups of women with HIV (WHIV) - Hispanic, Haitian, and African American - using data from 542 WHIV enrolled in the Miami-Dade County Ryan White Program. Univariate and multivariable logistic regression models were applied for each…

  • Barriers to Covid-19 vaccination and strategies to increase trust and uptake among racial and ethnic minorities with HIV in South Florida

    Open Access•Daisy Ramírez‐Ortiz, Daisy Ramírez-Ortiz et al.•ARTICLE•BMC Public Health•2025

    Vaccination efforts for PWH should prioritize addressing specific barriers and concerns related to their HIV status and tailoring strategies to meet their needs

  • Using Dynamic Causal Bayesian Networks to Assess the Role of Patient-Centered Care and Individual-Level Barriers on Viral Suppression Changes Among a Cohort of People with HIV

    Open Access•Mary Jo Trepka, Samantha Gonzales et al.•ARTICLE•AIDS and Behavior•2026

    To assess the impact of changes in barriers to HIV viral suppression and the moderating role of patient-provider relationships, we conducted a retrospective cohort study using dynamic causal Bayesian network analyses on the first two available needs assessments between May 2020 and December 2022 for clients of the Miami-Dade County Ryan White Program (RWP) Part A Program. A cohort of 1539 individuals was formed using data from the RWP medical cas…

Medicine (16 obras) · HIV/AIDS Research and Interventions (13 obras) · Psychology (12 obras) · Gerontology (11 obras) · HIV, Drug Use, Sexual Risk (10 obras) · Human immunodeficiency virus (HIV (9 obras) · Demography (8 obras) · Family medicine (7 obras) · Psychiatry (7 obras) · Public health (7 obras)

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