Jason Fletcher

Factors associated with retention and viral suppression among a cohort of HIV+ women of color.

Access to sustained HIV medical care is critical to achieving viral suppression. However, a variety of factors may impede or facilitate retention in care or becoming virally suppressed. Though retention and suppression are often treated separately, this study examined both in a cohort of 921 HIV+ women of color who participated in eight demonstration programs across the US. For women who met the inclusion criteria, 83% (n = 587) were retained and 73% (n = 357) were virally suppressed. Average age of women retained was 40.9, and 41.9 for those virally suppressed. The majority were African American/Black or Hispanic/Latina, single, and had no children less than 18 years of age, had health insurance, a high school degree or higher, were stably housed, and unemployed. Some factors associated with retention in care were indecision about seeking HIV medical care (AOR = 0.42) and having children under the age of 18 (AOR = 0.59). Some factors associated with being virally suppressed were living with others (AOR = 0.58), current substance abuse (AOR = 0.38), and fair/poor health (AOR = 0.40). The findings suggest different processes and social mechanisms may influence retention and viral suppression. Interventions seeking to improve retention in care may require tailored program components and strategies that focus on improving viral suppression.

Violence screening and viral load suppression among HIV-positive women of color

Recent research suggests intimate partner violence (IPV) is commonly experienced by many people living with HIV/AIDS, which can complicate their care. We introduce a novel approach to screening for history of violence among 102 women of color living with HIV and receiving care at an outpatient public health clinic. Using a composite measure composed of data from a variety of screening tools, we were able to determine that 70.6% of the women had a history of violence using the composite measure, and that 43% screened positive using multiple screening tools. Although overall viral load suppression rate was high at 81.4%, women with a history of violence were less likely to be virally suppressed when compared to those without such a history (76.4% versus 93.3%, p<0.05). Our findings suggest using a variety of screening questions at entry and at follow-up care appointments may be key to identifying and supporting women survivors who may not disclose violence when first asked. Future research should foster further development, analysis, and use of a variety of screening tools such as those used in this study.

Precision assessment of heterogeneity of lymphedema phenotype, genotypes and risk prediction.

Lymphedema following breast cancer surgery is considered to be mainly due to the mechanical injury from surgery. Recent research identified that inflammation-infection and obesity may be the important predictors for lymphedema. The purpose of this exploratory research was to prospectively examine phenotype of arm lymphedema defined by limb volume and lymphedema symptoms in relation to inflammatory genes in women treated for breast cancer. A prospective, descriptive and repeated-measure design using candidate gene association method was used to enroll 140 women at pre-surgery and followed at 4-8 weeks and 12 months post-surgery. Arm lymphedema was determined by a perometer measurement of ≥5% limb volume increase from baseline of pre-surgery. Lymphedema symptom phenotype was evaluated using a reliable and valid instrument. Saliva samples were collected for DNA extraction. Genes known for inflammation were evaluated, including lymphatic specific growth factors (VEGF-C & VEGF-D), cytokines (IL1-a, IL-4, IL6, IL8, IL10, & IL13), and tumor necrosis factor-a (TNF-a). No significant associations were found between arm lymphedema phenotype and any inflammatory genetic variations. IL1-a rs17561 was marginally associated with symptom count phenotype of ≥8 symptoms. IL-4 rs2070874 was significantly associated with phenotype of impaired limb mobility and fluid accumulation. Phenotype of fluid accumulation was significantly associated with IL6 rs1800795, IL4 rs2243250 and IL4 rs2070874. Phenotype of discomfort was significantly associated with VEGF-C rs3775203 and IL13 rs1800925. Precision assessment of heterogeneity of lymphedema phenotype and understanding the biological mechanism of each phenotype through the exploration of inherited genetic susceptibility is essential for finding a cure. Further exploration of investigative intervention in the context of genotype and gene expressions would advance our understanding of heterogeneity of lymphedema phenotype.

PETS-D: Impact on Diabetes Management Outcomes

Objective To evaluate the efficacy of Parent Education Through Simulation–Diabetes (PETS-D; clinical trial registration NCT01517269) for parents of children <13 years old newly diagnosed with type 1 diabetes with 3 parent education vignette sessions using human patient simulation (HPS) as compared with formal parent-nurse education sessions (vignette only) regarding diabetes knowledge, problem-solving skills, hypoglycemia fear, anxiety, and self-efficacy. Design and Methods Subjects were randomized to the HPS parent diabetes education or the vignette-only arm. Using linear mixed modeling, we compared HPS and vignette-only groups at 2, 6, and 14 weeks. Effect modification of treatment by dichotomized child’s age (<6 and ≥6 years old) and parent education (≤high school and >high school) was also tested. All analyses were intent to treat and adjusted for baseline outcome level and clustering within site. Results We recruited 191 parents (116 children). Mean baseline A1C was 12%. Overall treatment-related differences were modest. There was a statistically significant effect modification of HPS by child’s age, with a larger HPS benefit among parents of younger children for several outcomes: A1C (8.16% vs 9.48% in control; P = .006), lower state anxiety (P = .0094), and higher fear of hypoglycemia (P = .03) for parents of children <6 years old in the HPS group. Conclusions Modest treatment-related differences may reflect ceiling/floor effects in many of the outcomes; we also compared HPS with another intervention rather than to usual education. Parents of younger children receiving the intervention may feel more comfortable with lower A1C levels because of management awareness gleaned from the HPS experience. Future research will include a retrospective case-control study of very young children.

Patterns of Obesity and Lymph Fluid Level during the First Year of Breast Cancer Treatment: A Prospective Study.

Obesity is one of the risk factors for developing lymphedema following breast cancer treatment. We prospectively enrolled 140 women and followed the participants for 12 months after surgery to investigate patterns of obesity and lymph fluid level in the first year of cancer treatment. Electrical bioimpedance devices were used to measure weight, BMI, and percent of body fat as well as lymph fluid level. General instructions were given to the participants on maintaining pre-surgery weight. Among the 140 participants, 136 completed the study with 2.9% attrition. More than 60% of the participants were obese (30.8%) or overweight (32.4%), while only two participants were underweight and about 35% had normal weight. This pattern of obesity and overweight was consistent at 4–8 weeks and 12 months post-surgery. At 12 months post-surgery, the majority of the women (72.1%) maintained pre-surgery weight and 15.4% had >5% weight loss; 12.5% of the women increase >5% of their weight. Significantly more patients in the obesity group had lymphedema defined by L-Dex ratio >7.1 than those in the normal/underweight and overweight group at pre-surgery and 4–8 weeks post-surgery. There was a trend of more patients in the obesity group had L-Dex ratio >7.1 at 12 months post-surgery. Obesity and overweight remain among women at the time of cancer diagnosis and the patterns of obesity and overweight continue during the first year of treatment. General instructions on having nutrition-balanced and portion-appropriate diet and physical activities daily or weekly can be effective to maintain pre-surgery weight.

Short and Precise Patient Self-Assessment of Heart Failure Symptoms Using a Computerized Adaptive Test

Background— Assessment of dyspnea, fatigue, and physical disability is fundamental to the monitoring of patients with heart failure (HF). A plethora of patient-reported measures exist, but most are too burdensome or imprecise to be useful in clinical practice. New techniques used for computer adaptive tests (CATs) may be able to address these problems. The purpose of this study was to build a CAT for patients with HF. Methods and Results— Item banks of 74 queries (“items”) were developed to assess self-reported physical disability, fatigue, and dyspnea. All queries were administered to 658 adults with HF to build 3 item banks. The resulting HF-CAT was administered to 100 patients with ancillary HF (New York Heart Association I, 11%; II, 53%; III and IV, 36%). In addition, the physical function and vitality domains of the SF-36 Health Survey questionnaire, an established shortness-of-breath scale, and the Minnesota Living with Heart Failure Questionnaire were applied. The HF-CAT assessment took 3:09±1:52 minutes to complete and score. All HF-CAT scales demonstrated good construct validity through high correlations with the corresponding SF-36 Health Survey physical function (r=−0.87), vitality (r=−0.85), and shortness-of-breath (r=0.84) scales. Simulation studies showed a more precise measurement of all HF-CAT scales over a larger range than comparable static tools. The HF-CAT scales identified significant differences between patients classified by the New York Heart Association symptom criteria, similar to the Minnesota Living with Heart Failure Questionnaire. Conclusions— A new CAT for patients with HF was built using modern psychometric methods. Initial results demonstrate its potential to increase the feasibility and precision of patient self-assessments of symptoms of HF with minimized respondent burden. Clinical Trial Registration— URL: http://www.projectreporter.nih.gov. Unique identifier: 1R43HL083622-01.

Short and Precise Patient Self-Assessment of Heart Failure Symptoms Using a Computerized Adaptive Test (HF-CAT)

Background— Assessment of dyspnea, fatigue, and physical disability is fundamental to the monitoring of patients with heart failure (HF). A plethora of patient-reported measures exist, but most are too burdensome or imprecise to be useful in clinical practice. New techniques used for computer adaptive tests (CATs) may be able to address these problems. The purpose of this study was to build a CAT for patients with HF. Methods and Results— Item banks of 74 queries (“items”) were developed to assess self-reported physical disability, fatigue, and dyspnea. All queries were administered to 658 adults with HF to build 3 item banks. The resulting HF-CAT was administered to 100 patients with ancillary HF (New York Heart Association I, 11%; II, 53%; III and IV, 36%). In addition, the physical function and vitality domains of the SF-36 Health Survey questionnaire, an established shortness-of-breath scale, and the Minnesota Living with Heart Failure Questionnaire were applied. The HF-CAT assessment took 3:09±1:52 minutes to complete and score. All HF-CAT scales demonstrated good construct validity through high correlations with the corresponding SF-36 Health Survey physical function (r=−0.87), vitality (r=−0.85), and shortness-of-breath (r=0.84) scales. Simulation studies showed a more precise measurement of all HF-CAT scales over a larger range than comparable static tools. The HF-CAT scales identified significant differences between patients classified by the New York Heart Association symptom criteria, similar to the Minnesota Living with Heart Failure Questionnaire. Conclusions— A new CAT for patients with HF was built using modern psychometric methods. Initial results demonstrate its potential to increase the feasibility and precision of patient self-assessments of symptoms of HF with minimized respondent burden. Clinical Trial Registration— URL: http://www.projectreporter.nih.gov. Unique identifier: 1R43HL083622-01.

Glycemic Status and Infection Risk in Nondiabetic Autologous Hematopoietic Cell Transplantation Recipients

Background: Patients undergoing hematopoietic cell transplantation (HCT) for hematological malignancies experience a number of challenges during treatment. There is growing evidence that malglycemia (hyperglycemia, hypoglycemia, and/or increased glycemic variability) contributes to HCT-related complications, even in patients without preexisting diabetes. The purpose of this pilot study was to investigate factors influencing glycemic status and associated infection occurrences in nondiabetic autologous HCT recipients. Methods: Oncology patients without preexisting diabetes treated with autologous HCT at a National Cancer Institute–designated cancer center were followed from admission through discharge or 28 days post-HCT. Patients had morning fasting laboratory tests. Descriptive statistics and Cox proportional hazards models were used to examine associations between BG levels and risk for infection while adjusting for baseline covariates including age, body mass index (BMI), cumulative glucocorticoid dose, and diagnosis. Results: The sample included 28 female and 25 male predominately non-Hispanic White patients (mean age 55.7 years, SD = 11.32). Blood glucose (BG) range was 35–325 mg/dl. Twenty-three patients incurred at least one infection. BMI ≥ 25 kg/m2 was associated with high BG and infections. In the multivariate Cox model, an increase of 1 interquartile range in BG 2 days before infection was associated with a moderately increased risk of infection (hazard ratio = 1.44, p = .008). Conclusions: Understanding the contributors to and consequences of malglycemic events can lead to better protocols for identifying patients at greater risk for infection. Further investigation is warranted for interventions to mitigate BG events for improved outcomes.

Health Status of HIV-Infected Women Entering Care: Baseline Medical Findings from the Women of Color Initiative

The WOC Initiative is a prospective study of 921 women of color (WOC) entering HIV care at nine (three rural, six urban) sites across the US. A baseline interview was performed that included self-reported limitation(s) in activity, health conditions, and the CDCs health-related quality of life measures (Healthy Days). One-third of the WOC reported limiting an activity because of illness or a health condition and those with an activity limitation reported 13 physically and 14 mentally unhealthy days/month, compared with 5 physically and 9 mentally unhealthy days/month in the absence of an activity limitation. Age was associated with a three- to fourfold increased risk of an activity limitation but only for WOC in the urban sites. Diabetes was associated with a threefold increased risk of a limitation among women at rural sites. Cardiac disease was associated with a six- to sevenfold increased risk of an activity limitation for both urban and rural WOC. HIV+ WOC reported more physically and mentally unhealthy days than the general US female population even without an activity limitation. Prevention and treatment of diabetes and cardiovascular disease will need to be a standard part of HIV care to promote the long-term health and HRQOL for HIV-infected WOC.

Examining Racial Discrimination Frequency, Racial Discrimination Stress, and Psychological Well-Being Among Black Early Adolescents:

Racial discrimination is a ubiquitous experience for Black adolescents; it has been linked to poorer psychological outcomes including higher depressive symptoms and lower self-esteem. However, the mechanisms through which racial discrimination is associated with psychological well-being are still not well understood, particularly among Black early adolescents. The current study investigated two dimensions of racial discrimination: racial discrimination frequency (RDfreq) and racial discrimination stress (RDstress). Specifically, we explored the prevalence of RDfreq and RDstress among Black youth and whether RDstress mediated the association between RDfreq and psychological well-being. Seventy-four Black middle school students (68.1% female; mean age = 12.1) completed self-report questionnaires assessing RDfreq, RDstress, depression, and self-esteem; 72 were included in the final analyses. Mediation analyses were conducted using bootstrapping. Ninety percent of the sample reported experiencing some type of racial discrimination and 99% reported that these experiences bothered them. Controlling for age, gender, and ethnicity, RDstress partially mediated the relationship between RDfreq and depression. Study findings elucidate one pathway in which racial discrimination influences psychological well-being.