Cathryn L. Samples

Virologic and Immunologic Outcomes after 24 Weeks in HIV Type 1-Infected Adolescents Receiving Highly Active Antiretroviral Therapy

BACKGROUND Adolescents represent the fastest growing demographic group of new human immunodeficiency virus (HIV) infections in the United States. At present, there is little information available about their response to therapy. METHODS We studied 120 adolescents infected via high-risk behaviors who began receiving highly active antiretroviral therapy (HAART), to determine their virologic and immunologic response to therapy. RESULTS Subjects were enrolled at 28 sites of the Pediatric Acquired Immunodeficiency Syndrome Clinical Trials Group. After 16-24 weeks of HAART, 59% of subjects had reproducible undetectable virus loads, according to repeat measurements (virologic success). As enumerated by flow-cytometric analysis, increases in levels of CD4 helper cells (both naive and memory) and decreases in levels of CD8 suppressor cells were observed. Partial restoration of some immunologic parameters for patients who did not achieve virologic success was also observed, but to a more limited extent than for adolescents with virologic success. Adherence to HAART was the only predictor of achieving undetectable virus loads. CONCLUSIONS Adolescents have the capacity to improve their immunologic status with HAART. Lower than expected success in virologic control is related to lack of adherence, and efforts to improve treatment outcome must stress measures to assure adherence to medication.

Outreach, Mental Health, and Case Management Services: Can They Help to Retain HIV-Positive and At-Risk Youth and Young Adults in Care?

Objectives: To assess the impact of outreach, mental health, and case management services on retention in primary care of HIV+ and at-risk youth and young adult clients of the Boston HAPPENS program, a comprehensive adolescent HIV prevention and care network of agencies. Methods: Providers at 8 urban sites used standard data forms at each visit to collect background and service receipt information on at-risk clients aged 12–24 years. Data were aggregated across all visits for each client to create summary variables for the number of times each client received each type of service. The retention measure was the number of days between a clients first and last visits during the 4-year data collection period. Kaplan–Meier survival curve and Cox proportional hazards regression analyses were used to assess the association between receipt of the support services of interest and the retention measure. Results: The median retention times were 21 days for male clients (range, 0–1406, N = 512), and 26 days for female clients (range, 0–1577, N = 914). Among males, 45% were retained beyond a month, 24% beyond a year, and 10% beyond 2 years. Similar proportions of females were retained beyond a month and a year, but more females were retained beyond 2 years (15%). After adjusting for other covariates, both male and female clients had significantly longer retention times if they received ≥q2 outreach contacts, or case management at ≥q3 visits. Among males, receipt of mental health counseling at ≥q2 visits also increased retention times. Conclusions: These findings suggest that provision of outreach, mental health, and case management services can improve retention in care of at-risk youth and young adults.

Boston HAPPENS Program: A model of health care for HIV-positive, homeless, and at-risk youth

The Boston HAPPENS [Human immunodeficiency virus (HIV) Adolescent Provider and Peer Education Network for Services] Program is a project supported by Special Projects of National Significance (SPNS) Program, HIV/AIDS Bureau, Health Resources and Services Administration, which provides a network of care for homeless, at-risk, and HIV-positive youth (ages 12-24 years), involving eight agencies. The program has provided services to 1301 youth, including 46 who are HIV-positive. Boston HAPPENS provides a citywide network of culturally and developmentally appropriate adolescent-specific care, including: (a) outreach and risk-reduction counseling through professional and adult-supervised peer staff, (b) access to appropriate HIV counseling and testing support services, (c) life management counseling (mental health intake and visits as part of health care and at times of crisis), (d) health status screening and services needs assessment, (e) client-focused, comprehensive, multidisciplinary care and support, (f) follow-up and outreach to ensure continuing care, and (g) integrated care and communication among providers in the metropolitan Boston area. This innovative network of youth-specific care offers a continuum from street outreach to referral and HIV specialty care that crosses institutional barriers.

Primary care experiences and preferences of urban youth

There are few qualitative studies that assess the experiences and preferences of urban youth with regard to use of primary care. The purpose of this pilot survey was to identify positive and negative influences and underlying issues for adolescents leading to seeking and returning for primary health care. Four focus groups totaling 20 diverse adolescents ranging in age from 13 to 21 years were conducted between April 1994 and June 1994. Participants were recruited through existing peer leadership groups that meet regularly at community health centers or afterschool programs. Urban adolescents are most concerned with being respected and treated well by primary care providers. They want to be listened to, to have their problems taken seriously, and to be treated with dignity and respect. Participants expressed strong preferences regarding sex, sexual orientation, and language of providers, but not for race or ethnicity. Qualitative methods such as focus groups give a voice to youth to advocate for access to adolescent-specific health services. Further research is needed to corroborate the results of this study, to expand our understanding of existing problems, and to investigate the predictors of health care use by vulnerable youth.

Perceived Peer Safer Sex Norms and Sexual Risk Behaviors Among Substance-Using Latino Adolescents

We investigated the association between perceived peer norms and safer sexual behaviors among substance using Latino youth. Between 2005 and 2006, cross-sectional data were collected from 92 Latino adolescents recruited from clinic- and community-based settings in two U.S. cities. Separate multivariate logistic regression models were used to assess the relationship between perceived peer norms around safer sex and two different outcomes: consistent condom use and multiple sexual partnerships. Among these participants, perceived peer norms encouraging safer sex were associated with consistent condom use even after controlling for individual- and partner-related factors. Perceived peer norms supporting safer sex were inversely associated with recently having two or more sexual partners after controlling for demographic characteristics. Perceived peer norms around safer sexual behavior contribute to a lower likelihood of engaging in two HIV/STI risk behaviors: inconsistent condom use and multiple partnering. These findings suggest that further development of peer-based interventions for Latino youth is warranted.

Initiation of Services in the Boston HAPPENS Program: Human Immunodeficiency Virus-Positive, Homeless, and At-Risk Youth Can Access Services

This study evaluates the factors associated with initiation of services in the Boston HAPPENS Program, which is a collaborative network of care consisting of multiservice outreach agencies, community health centers and hospitals, for human immunodeficiency virus (HIV)-positive and hard to reach youth who are 12-24 years old. The program served 2116 youth who were 19.8 +/- 2.9 years old; 64% female; 45% youth of color; 16% gay/lesbian, bisexual, or undecided; and 10% homeless or runaway. At first contact with the program, 56% received outreach services; and 91% received a health intervention. Among those receiving a health intervention, 55% had HIV counseling and testing services, 49% medical care, 24% case management, and 9% mental health services. HIV-positive youth needed more contacts before a first medical visit than those who were HIV-negative or untested (p < 0.001). Different kinds of service sites reached different populations of at-risk youth. Logistic regression modeling showed that for young women, older age, lesbian-bisexual orientation, substance use, high-risk sexual behaviours, and receiving outreach services at first contact were independent predictors of initiation of services at outreach agencies; however, unprotected sex with males, and pregnancy were associated with a greater likelihood of care at hospitals or community health centers. For young men, older age, Asian/other ethnicity, and substance abuse were associated with care at outreach agencies; however, positive HIV status and unprotected sex with females were associated with care at hospitals or community health centers. Comprehensive networks of care offering a continuum of services and a variety of entry routes and types of care sites are needed to connect underserved youth to health care.

A comparison of weight-related behaviors among high school students who are homeless and non-homeless:

BACKGROUND Previous research has shown that youth who are homeless engage in high-risk behaviors. However, there has been little information published on nutritional and physical activity behaviors in this population, and studies comparing homeless youth in school with their non-homeless peers are scarce. This study compares weight-related risk behaviors of public high school students in Massachusetts based on homeless status. METHODS We obtained data from 3264 9th through 12th grade students who participated in the 2005 Massachusetts Youth Risk Behavior Survey. Multivariable logistic regression, controlling for gender, grade, race/ethnicity, and sexual orientation, was performed to assess the relationship between homeless status as defined by the McKinney-Vento Homeless Assistance Act and weight-related indicators. Analyses were weighted and adjusted for the multistage complex sampling design. RESULTS Of this sample, 4.2% reported being homeless (n = 152). Higher prevalence of homelessness was found among males, racial/ethnic minorities, sexual minorities, and students who were not in a traditional grade level. The distribution of body mass index was similar among students who were homeless and non-homeless (underweight 4.0 and 3.0%, and overweight 27.1 and 27.1%, respectively). Homeless students were more likely than non-homeless students to report disordered weight-control behaviors including fasting (aOR 2.5, 95% CI 1.4-4.5) and diet pill use (aOR 3.3, 95% CI 1.6-6.9). CONCLUSIONS More than 4% of public high school students in Massachusetts meet the federal definition of homelessness. These students are at high risk for disordered weight-control behaviors. Policy decisions at the school, state, and federal levels should make a concerted effort to target these students with social services and nutritional interventions.

Caring for teens with chronic illness: risky business?

Purpose of review With advances in medicine, more children with chronic illness are reaching adolescence and young adulthood. Research has shown that this group is not immune to the behavioral risks endorsed by healthy adolescents. Recent literature exploring the etiology of risk behaviors and their impact on chronic illness is presented. Recent findings Risk taking may be the result of differential maturation of two distinct parts of the adolescent brain. Risk taking can be considered normal in adolescents with chronic illness, but there is some evidence that chronic illness affects normal psychosocial development. Moreover, evidence supports that chronic illness can lead to disparities in risk education and assessment because of disease focused management rather than a more comprehensive approach. Summary Youth living with chronic illnesses face unique challenges in accomplishing the developmental tasks of adolescence. These challenges include risk behaviors, which jeopardize current and future health. The reasons for risk taking are multifactorial and require providers to make the adolescent and not the illness the center of management. More research is needed on how to improve developmentally appropriate and relevant interventions to aid in safe passage into adulthood.

The Boston HAPPENS program: needs and use of services by HIV-positive compared to at-risk youth, including gender differences

Objective: The Boston HAPPENS (HIV Adolescent Provider and Peer Education Network for Services) Program is a linked services network of care for HIV-positive, homeless, and at risk youth in Metropolitan Boston funded by the Special Projects of National Significance Program. This report studies the needs and use of services by HIV-positive youth compared with negative and untested at-risk youth, including gender differences. Design: Providers collected information prospectively at outreach and services encounters, including demographic information, risk behaviors, and service utilization data. Results: Youth (N=1044) were 19.6±3.0 years old; 38% male; 43% youth of color; and 4% self-identified as gay/lesbian/bisexual and 11.0% as homeless and/or runaway youth. HIV-positive clients (N=26) were more likely to use a range of network related health services. HIV-positive young women were more likely to report previous pregnancy (21% vs 5%, p=0.04) or sexual contact with high risk partners such as an injection drug user (57% vs 6%, p=0.0009), an HIV-positive person (p<0.00001), or survival sex (33% vs 8%, p=0.04) than the other young women. HIV-positive young men were more likely to be youth of color (75% vs 43%, p=0.04) and self-identify as gay or bisexual (42% vs 4%, p=0.005), and to report same sex partners (80% vs 29%, p=0.03) and substance use (100% vs 26%, p=0.006) than other young men. Youth seen at an outreach site were 10 times as likely to access medical care through the program (95% CI, 6.9–14.6). Conclusions: HIV-positive youth are accessing coordinated care and there are gender differences in the needs for services. Health care policies should facilitate the development and evaluation of comprehensive, youth-specific health services for these hard to reach populations.

Evaluation of a Targeted HIV Testing Program for At-Risk Youth

With the advent of new therapies for HIV, case identification through HIV counseling and testing (CTS) has become critically important. Young women, youth of color, and disenfranchised youth are at significant risk of acquiring HIV. This study describes clients who access CTS at a program of comprehensive care for high-risk youth (aged 12 to 24 years), and assessed, using logistic regression analyses, whether youth at highest risk utilized CTS. Most of the 531 youth were female (72 percent) and nonwhite (60 percent). Sixty-eight percent received CTS. Logistic regression modeling revealed that white race and receiving care at the teaching hospital were the only independent predictors of testing. Data indicate that, despite targeted, youth-specific, developmentally appropriate and culturally sensitive outreach and intervention efforts, youth of color and high-risk youth are poorly accessing CTS. A greater understanding of the barriers to and cultural norms regarding CTS is needed.