Food insecurity is associated with poor virologic response among HIV-infected patients receiving antiretroviral medications

Structural community factors and sub-optimal engagement in HIV care among low-income women in the Deep South of the USA

This study describes the ways in which poverty and other structural factors create a risk environment for sub-optimal engagement in HIV care among low-income women living with HIV in the Southern USA, contributing to existing health disparities. We conducted a qualitative study in 2012, involving in-depth interviews with 14 stakeholders (service providers and representatives of community-based organisations) and 7 focus-group discussions with 46 women living with HIV (89% African American). A thematic approach in the context of the social ecological model guided data analysis. Data were coded and analysed using NVivo qualitative software. The findings suggested that structural community factors, such as poverty, poor employment opportunities, limited access to healthcare resources, stigma, transportation challenges and access to illicit substances, may work independently and in synergy to impact women's health seeking behaviour and decision-making, thereby influencing their ability to engage in HIV care. Interventions designed to improve engagement in HIV care should address structural factors to bolster low-income women's ability to engage in care.

Housing Status, Medical Care, and Health Outcomes Among People Living With HIV/AIDS: A Systematic Review

BACKGROUND

Accumulating evidence suggests responses to HIV that combine individual-level interventions with those that address structural or contextual factors that influence risks and health outcomes of infection. Housing is such a factor. Housing occupies a strategic position as an intermediate structural factor, linking "upstream" economic, social, and cultural determinants to the more immediate physical and social environments in which everyday life is lived. The importance of housing status for HIV prevention and care has been recognized, but much of this attention has focused on homeless individuals as a special risk group. Analyses have less often addressed community housing availability and conditions as factors influencing population health or unstable, inadequate, or unaffordable housing as a situation or temporary state. A focus on individual-level characteristics associated with literal homelessness glosses over social, economic, and policy drivers operating largely outside any specific individual's control that affect housing and residential environments and the health resources or risk exposures such contexts provide.

OBJECTIVES

We examined the available empirical evidence on the association between housing status (broadly defined), medical care, and health outcomes among people with HIV and analyzed results to inform future research, program development, and policy implementation.

SEARCH METHODS

We searched 8 electronic health and social science databases from January 1, 1996, through March 31, 2014, using search terms related to housing, dwelling, and living arrangements and HIV and AIDS. We contacted experts for additional literature.

SELECTION CRITERIA

We selected articles if they were quantitative analyses published in English, French, or Spanish that included at least 1 measure of housing status as an independent variable and at least 1 health status, health care, treatment adherence, or risk behavior outcome among people with HIV in high-income countries. We defined housing status to include consideration of material or social dimensions of housing adequacy, stability, and security of tenure.

DATA COLLECTION AND ANALYSIS

Two independent reviewers performed data extraction and quality appraisal. We used the Cochrane Risk of Bias Tool for randomized controlled trials and a modified version of the Newcastle Ottawa Quality Appraisal Tool for nonintervention studies. In our quality appraisal, we focused on issues of quality for observational studies: appropriate methods for determining exposure and measuring outcomes and methods to control confounding.

RESULTS

Searches yielded 5528 references from which we included 152 studies, representing 139,757 HIV-positive participants. Most studies were conducted in the United States and Canada. Studies examined access and utilization of HIV medical care, adherence to antiretroviral medications, HIV clinical outcomes, other health outcomes, emergency department and inpatient utilization, and sex and drug risk behaviors. With rare exceptions, across studies in all domains, worse housing status was independently associated with worse outcomes, controlling for a range of individual patient and care system characteristics.

CONCLUSIONS

Lack of stable, secure, adequate housing is a significant barrier to consistent and appropriate HIV medical care, access and adherence to antiretroviral medications, sustained viral suppression, and risk of forward transmission. Studies that examined the history of homelessness or problematic housing years before outcome assessment were least likely to find negative outcomes, homelessness being a potentially modifiable contextual factor. Randomized controlled trials and observational studies indicate an independent effect of housing assistance on improved outcomes for formerly homeless or inadequately housed people with HIV. Housing challenges result from complex interactions between individual vulnerabilities and broader economic, political, and legal structural determinants of health. The broad structural processes sustaining social exclusion and inequality seem beyond the immediate reach of HIV interventions, but changing housing and residential environments is both possible and promising.

ART Adherence as a Key Component of Prevention With Persons Living With HIV in Mozambique

Medication adherence is an effective approach to prevent HIV transmission. In Mozambique, a country with a generalized epidemic, the government has adopted Positive Prevention (PP) training for clinicians as part of its national strategy. Our study, conducted after trainings in five clinics, examined the understanding of trained health care staff and their patients about the importance of adherence to antiretroviral therapy (ART), a key element of PP. Interviews with trained clinicians (n = 31) and patients (n = 57) were conducted and analyzed. Clinicians and patients demonstrated an understanding that ART adherence could decrease HIV transmission. However, participants also highlighted the difficulties of adherence when patients had limited access to food. At the same time that treatment as prevention awareness was increasing, poverty and widespread food insecurity were barriers to taking medications. In Mozambique, the full benefits of treatment as prevention may not be realized without adequate access to food.

The Association Between Food Insufficiency and HIV Treatment Outcomes in a Longitudinal Analysis of HIV-Infected Individuals in New York City

BACKGROUND

To date, there have been few longitudinal studies of food insecurity among people living with HIV (PLWH). Food insufficiency (FI) is one dimension of the food insecurity construct that refers to periods of time during which individuals have an inadequate amount of food intake because of limited resources. The aim of this analysis was to examine the relationship between FI and HIV treatment outcomes among HIV-infected individuals in New York City (NYC).

METHODS

Associations between FI ("consistent"--food insufficient on both of the last 2 assessments, "inconsistent"--food insufficient on 1 of the last 2 assessments, or neither) and clinical indicators of HIV disease progression (viral load > 200 copies per milliliter, CD4 count < 200 cells per cubic millimeter) were analyzed for NYC Ryan White Part A food and nutrition program clients who were matched to the NYC HIV Surveillance Registry and completed 2 FI assessments between November 2011 and June 2013.

RESULTS

Among 2,118 PLWH in food and nutrition programs, 61% experienced consistent FI and 25% experienced inconsistent FI. In multivariate analyses controlling for sociodemographic characteristics, consistent FI was independently associated with unsuppressed viral load (adjusted odds ratio = 1.6, confidence interval: 1.1 to 2.5). Consistent FI was only associated with low CD4 counts at the bivariate level.

CONCLUSIONS

Future studies should examine biological, structural, and psychosocial factors that may explain the relationship between FI and HIV treatment outcomes to inform intervention development. Persistent FI among food and nutrition program clients suggests that services are needed to address underlying needs for financial stability (eg, vocational counseling) for PLWH.

Food insecurity, chronic illness, and gentrification in the San Francisco Bay Area: An example of structural violence in United States public policy

Food insecurity continues to be a major challenge in the United States, affecting 49 million individuals. Quantitative studies show that food insecurity has serious negative health impacts among individuals suffering from chronic illnesses, including people living with HIV/AIDS (PLHIV). Formulating effective interventions and policies to combat these health effects requires an in-depth understanding of the lived experience and structural drivers of food insecurity. Few studies, however, have elucidated these phenomena among people living with chronic illnesses in resource-rich settings, including in the United States. Here we sought to explore the experiences and structural determinants of food insecurity among a group of low-income PLHIV in the San Francisco Bay Area. Thirty-four semi-structured in-depth interviews were conducted with low-income PLHIV receiving food assistance from a local non-profit in San Francisco and Alameda County, California, between April and June 2014. Interview transcripts were coded and analysed according to content analysis methods following an inductive-deductive approach. The lived experience of food insecurity among participants included periods of insufficient quantity of food and resultant hunger, as well as long-term struggles with quality of food that led to concerns about the poor health effects of a cheap diet. Participants also reported procuring food using personally and socially unacceptable strategies, including long-term dependence on friends, family, and charity; stealing food; exchanging sex for food; and selling controlled substances. Food insecurity often arose from the need to pay high rents exacerbated by gentrification while receiving limited disability income--​a situation resulting in large part from the convergence of long-standing urban policies amenable to gentrification and an outdated disability policy that constrains financial viability. The experiences of food insecurity described by participants in this study can be understood as a form of structural violence, motivating the need for structural interventions at the policy level that extend beyond food-specific solutions.

Does Food Insecurity Undermine Adherence to Antiretroviral Therapy? A Systematic Review

A growing body of research has identified food insecurity as a barrier to antiretroviral therapy (ART) adherence. We systematically reviewed and summarized the quantitative literature on food insecurity or food assistance and ART adherence. We identified nineteen analyses from eighteen distinct studies examining food insecurity and ART adherence. Of the thirteen studies that presented an adjusted effect estimate for the relationship between food insecurity and ART adherence, nine found a statistically significant association between food insecurity and sub-optimal ART adherence. Four studies examined the association between food assistance and ART adherence, and three found that ART adherence was significantly better among food assistance recipients than non-recipients. Across diverse populations, food insecurity is an important barrier to ART adherence, and food assistance appears to be a promising intervention strategy to improve ART adherence among persons living with HIV. Additional research is needed to determine the effectiveness and cost-effectiveness of food assistance in improving ART adherence and other clinical outcomes among people living with HIV in the era of widespread and long-term treatment.

Food Insecurity and Its Relation to Psychological Well-Being Among South Indian People Living with HIV

Food insecurity (FI) and its link with depression and quality of life (QOL) among people living with HIV (PLHIV) in India are not well-documented. We analyzed cohort data from 243 male and 129 female PLHIV from Bengaluru, and found 19 % of men and 26 % of women reported moderate or severe FI over a 6-month period. Women reported higher mean depression than men, and lower mean QOL. In multivariate analyses adjusting for HIV stigma and demographic covariates, both male and female PLHIV with moderate to severe FI showed lower mean QOL than those reporting mild to no FI. Male but not female food insecure participants also had higher depression scores in adjusted regression analyses. As ART has improved the physical health of PLHIV, more effort is being invested in improving their psychological well-being. Our results suggest such interventions could benefit from including nutritional support to reduce FI among PLHIV.

Food Insecurity is Longitudinally Associated with Depressive Symptoms Among Homeless and Marginally-Housed Individuals Living with HIV

Depression and food insecurity are prevalent among people with HIV (PLHIV) and contribute to poor HIV outcomes. Longitudinal data can help clarify the effect of food insecurity on depression among PLHIV in the United States. We assessed the longitudinal association of food insecurity with symptoms of depression using validated measures among participants living with HIV from the Research on Access to Care in the Homeless cohort in San Francisco. We followed 346 participants for a median of 28 months. Over half of participants (55.0 %) were food insecure and 35.8 % had symptoms of depression. In adjusted models, severe food insecurity in the previous period was associated with increased depressive symptom severity (b = 1.22; p < 0.001). The association remained statistically significant in models including participant fixed effects. Severe food insecurity was also longitudinally associated with a binary variable indicating probable depression. Efforts to increase access to and participation in food security safety net programs for PLHIV could improve depression.

Food insecurity and health: data from the Veterans Aging Cohort Study

OBJECTIVE

Food insecurity may be a modifiable and independent risk factor for worse control of medical conditions, but it has not been explored among veterans. We determined the prevalence of, and factors independently associated with, food insecurity among veterans in the Veterans Aging Cohort Study (VACS).

METHODS

Using data from VACS from 2002-2008, we determined the prevalence of food insecurity among veterans who have accessed health care in the Veterans Health Administration (VA) as defined by "concern about having enough food for you or your family in the past month." We used multivariable logistic regression to determine factors independently associated with food insecurity and tests of trend to measure the association between food insecurity and control of hypertension, diabetes, HIV, and depression.

RESULTS

Of the 6,709 veterans enrolled in VACS, 1,624 (24%) reported being food insecure. Food insecurity was independently associated with being African American, earning <$25,000/year, recent homelessness, marijuana use, and depression. Being food insecure was also associated with worse control of hypertension, diabetes, HIV, and depression (p<0.001).

CONCLUSION

Food insecurity is prevalent and associated with worse control of medical conditions among veterans who have accessed care in the VA.

Shamba Maisha: Pilot agricultural intervention for food security and HIV health outcomes in Kenya: design, methods, baseline results and process evaluation of a cluster-randomized controlled trial

BACKGROUND

Despite advances in treatment of people living with HIV, morbidity and mortality remains unacceptably high in sub-Saharan Africa, largely due to parallel epidemics of poverty and food insecurity.

METHODS/DESIGN

We conducted a pilot cluster randomized controlled trial (RCT) of a multisectoral agricultural and microfinance intervention (entitled Shamba Maisha) designed to improve food security, household wealth, HIV clinical outcomes and women's empowerment. The intervention was carried out at two HIV clinics in Kenya, one randomized to the intervention arm and one to the control arm. HIV-infected patients >18 years, on antiretroviral therapy, with moderate/severe food insecurity and/or body mass index (BMI) <18.5, and access to land and surface water were eligible for enrollment. The intervention included: 1) a microfinance loan (~$150) to purchase the farming commodities, 2) a micro-irrigation pump, seeds, and fertilizer, and 3) trainings in sustainable agricultural practices and financial literacy. Enrollment of 140 participants took four months, and the screening-to-enrollment ratio was similar between arms. We followed participants for 12 months and conducted structured questionnaires. We also conducted a process evaluation with participants and stakeholders 3-5 months after study start and at study end.

DISCUSSION

Baseline results revealed that participants at the two sites were similar in age, gender and marital status. A greater proportion of participants at the intervention site had a low BMI in comparison to participants at the control site (18% vs. 7%, p = 0.054). While median CD4 count was similar between arms, a greater proportion of participants enrolled at the intervention arm had a detectable HIV viral load compared with control participants (49% vs. 28%, respectively, p < 0.010). Process evaluation findings suggested that Shamba Maisha had high acceptability in recruitment, delivered strong agricultural and financial training, and led to labor saving due to use of the water pump. Implementation challenges included participant concerns about repaying loans, agricultural challenges due to weather patterns, and a challenging partnership with the microfinance institution. We expect the results from this pilot study to provide useful data on the impacts of livelihood interventions and will help in the design of a definitive cluster RCT.

TRIAL REGISTRATION

This trial is registered at ClinicalTrials.gov, NCT01548599.

Cost-effectiveness of socioeconomic support as part of HIV care for the poor in an urban community-based antiretroviral program in Uganda

BACKGROUND

Socioeconomic support reduced nonretention in a community-based antiretroviral therapy (ART) program in Uganda. However, resource implications of expanding socioeconomic support are large, and cost-effectiveness analysis can inform budget priorities. We compared the incremental benefits and costs of providing education, food, or both forms of support (dual support) with existing ART services from a health care provider's perspective.

METHODS

Costs and outcome data were collected from a cohort of 2371 adult patients with HIV receiving education, food, or dual support from Reach Out Mbuya between 2004 and 2010. The primary outcome was averted loss to follow-up. The number of follow-up days was calculated for each patient along with accrued service and fixed program costs for the alternative forms of socioeconomic support in USD by standard costing methods. The socioeconomic support types were compared incrementally over the study period.

RESULTS

After 7 years, 762 (33%) of the patients were loss to follow-up with 42% of them receiving food. In the presence of providing ART, education support was less costly and more effective than the alternatives. The average unit cost for education, food, and dual support were $237, $538, and $776, respectively. The average total annual costs were $88,643 for education, $538,005 for food, and $103,045 for dual support.

CONCLUSIONS

Compared with food or dual support, investing in education of the children of ART patients is less costly and more effective in improving patient retention. Reach Out Mbuya should embrace this paradigm shift and channel its resources more efficiently and effectively by focusing on education support.

Measuring food and nutrition security: tools and considerations for use among people living with HIV

As an increasing number of countries implement integrated food and nutrition security (FNS) and HIV programs, global stakeholders need clarity on how to best measure FNS at the individual and household level. This paper reviews prominent FNS measurement tools, and describes considerations for interpretation in the context of HIV. There exist a range of FNS measurement tools and many have been adapted for use in HIV-endemic settings. Considerations in selecting appropriate tools include sub-types (food sufficiency, dietary diversity and food safety); scope/level of application; and available resources. Tools need to reflect both the needs of PLHIV and affected households and FNS program objectives. Generalized food sufficiency and dietary diversity tools may provide adequate measures of FNS in PLHIV for programmatic applications. Food consumption measurement tools provide further data for clinical or research applications. Measurement of food safety is an important, but underdeveloped aspect of assessment, especially for PLHIV.

A review of the role of food insecurity in adherence to care and treatment among adult and pediatric populations living with HIV and AIDS

Adherence to antiretroviral therapy (ART) is critical for reducing HIV/AIDS morbidity and mortality. Food insecurity (FI) is emerging as an important barrier to adherence to care and treatment recommendations for people living with HIV (PLHIV), but this relationship has not been comprehensively examined. Therefore, we reviewed the literature to explore how FI may impact ART adherence, retention in medical care, and adherence to health care recommendations among PLHIV. We found data to support FI as a critical barrier to adherence to ART and to other health care recommendations among HIV-infected adults, HIV-infected pregnant women and their HIV-exposed infants, and child and adolescent populations of PLHIV. Associations between FI and ART non-adherence were seen in qualitative and quantitative studies. We identified a number of mechanisms to explain how food insecurity and ART non-adherence may be causally linked, including the exacerbation of hunger or ART side effects in the absence of adequate food and competing resource demands. Interventions that address FI may improve adherence to care and treatment recommendations for PLHIV.

HIV quality report cards: impact of case-mix adjustment and statistical methods

BACKGROUND

There will be increasing pressure to publicly report and rank the performance of healthcare systems on human immunodeficiency virus (HIV) quality measures. To inform discussion of public reporting, we evaluated the influence of case-mix adjustment when ranking individual care systems on the viral control quality measure.

METHODS

We used data from the Veterans Health Administration (VHA) HIV Clinical Case Registry and administrative databases to estimate case-mix adjusted viral control for 91 local systems caring for 12 368 patients. We compared results using 2 adjustment methods, the observed-to-expected estimator and the risk-standardized ratio.

RESULTS

Overall, 10 913 patients (88.2%) achieved viral control (viral load ≤400 copies/mL). Prior to case-mix adjustment, system-level viral control ranged from 51% to 100%. Seventeen (19%) systems were labeled as low outliers (performance significantly below the overall mean) and 11 (12%) as high outliers. Adjustment for case mix (patient demographics, comorbidity, CD4 nadir, time on therapy, and income from VHA administrative databases) reduced the number of low outliers by approximately one-third, but results differed by method. The adjustment model had moderate discrimination (c statistic = 0.66), suggesting potential for unadjusted risk when using administrative data to measure case mix.

CONCLUSIONS

Case-mix adjustment affects rankings of care systems on the viral control quality measure. Given the sensitivity of rankings to selection of case-mix adjustment methods-and potential for unadjusted risk when using variables limited to current administrative databases-the HIV care community should explore optimal methods for case-mix adjustment before moving forward with public reporting.

Methods and protocol of a mixed method quasi-experiment to evaluate the effects of a structural economic and food security intervention on HIV vulnerability in rural Malawi: The SAGE4Health Study

Background

Poverty and lack of a predictable, stable source of food are two fundamental determinants of ill health, including HIV/AIDS. Conversely, episodes of poor health and death from HIV can disrupt the ability to maintain economic stability in affected households, especially those that rely on subsistence farming. However, little empirical research has examined if, and how, improvements in people’s economic status and food security translate into changes in HIV vulnerability.

Methods

In this paper, we describe in detail the methods and protocol of an academic-NGO collaboration on a quasi-experimental, longitudinal study of the mechanisms and magnitude of the impact of a multilevel economic and food security program (Support to Able-Bodied Vulnerable Groups to Achieve Food Security; SAFE), as implemented by CARE. Primary outcomes include HIV vulnerability (i.e., HIV risk behaviors, HIV infection), economic status (i.e., income, household assets) and food security (including anthropometric measures). We recruited participants from two types of areas of rural central Malawi: traditional authorities (TA) selected by CARE to receive the SAFE program (intervention group) and TAs receiving other unrelated CARE programming (controls). In the intervention TAs, we recruited 598 program participants (398 women, 200 men) and interviewed them at baseline and 18- and 36-month follow-ups; we interviewed 301 control households. In addition, we conducted random surveys (n = 1002) in the intervention and control areas with a 36-month assessment interval, prior to and after implementation of SAFE. Thus, we are examining intervention outcomes both in direct SAFE program participants and their larger communities. We are using multilevel modeling to examine mediators and moderators of the effects of SAFE on HIV outcomes at the individual and community levels and determine the ways in which changes in HIV outcomes feed back into economic outcomes and food security at later interviews. Finally, we are conducting a qualitative end-of-program evaluation consisting of in-depth interviews with 90 SAFE participants.

Discussion

In addition to examining pathways linking structural factors to HIV vulnerability, this research will yield important information for understanding the impact of a multilevel environmental/structural intervention on HIV, with the potential for other sustainable long-term public health benefits.

Relationship between hunger, adherence to antiretroviral therapy and plasma HIV RNA suppression among HIV-positive illicit drug users in a Canadian setting

Food insecurity may be a barrier to achieving optimal HIV treatment-related outcomes among illicit drug users. This study therefore, aimed to assess the impact of severe food insecurity, or hunger, on plasma HIV RNA suppression among illicit drug users receiving antiretroviral therapy (ART). A cross-sectional Multivariate logistic regression model was used to assess the potential relationship between hunger and plasma HIV RNA suppression. A sample of n = 406 adults was derived from a community-recruited open prospective cohort of HIV-positive illicit drug users, in Vancouver, British Columbia (BC), Canada. A total of 235 (63.7%) reported "being hungry and unable to afford enough food," and 241 (59.4%) had plasma HIV RNA < 50 copies/ml. In unadjusted analyses, self-reported hunger was associated with lower odds of plasma HIV RNA suppression (Odds Ratio = 0.59, 95% confidence interval [CI]: 0.39-0.90, p = 0.015). In multivariate analyses, this association was no longer significant after controlling for socio-demographic, behavioral, and clinical characteristics, including 95% adherence (Adjusted Odds Ratio [AOR] = 0.65, 95% CI: 0.37-1.10, p = 0.105). Multivariate models stratified by 95% adherence found that the direction and magnitude of this association was not significantly altered by the adherence level. Hunger was common among illicit drug users in this setting. Although, there was an association between hunger and lower likelihood of plasma HIV RNA suppression, this did not persist in adjusted analyses. Further research is warranted to understand the social-structural, policy, and physical factors shaping the HIV outcomes of illicit drug users.

Food insecurity is associated with increased risk of non-adherence to antiretroviral therapy among HIV-infected adults in the Democratic Republic of Congo: a cross-sectional study

Background

Food insecurity is increasingly reported as an important barrier of patient adherence to antiretroviral therapy (ART) in both resource-poor and rich settings. However, unlike in resource rich-settings, very few quantitative studies to date have investigated the association of food insecurity with patient adherence to ART in Sub-Saharan Africa. The current study examines the association between food insecurity and adherence to ART among HIV-infected adults in the Democratic Republic of Congo (DRC).

Methods and Findings

This is a cross-sectional quantitative study of patients receiving ART at three private and one public health facilities in Kinshasa, DRC. Participants were consecutively recruited into the study between April and November 2012. Adherence was measured using a combined method coupling pharmacy refill and self-reported adherence. Food insecurity was the primary predictor, and was assessed using the Household Food Insecurity Access Scale (HFIAS). Of the 898 participants recruited into the study, 512 (57%) were food insecure, and 188 (20.9%) were not adherent to ART. Food insecurity was significantly associated with non-adherence to ART (AOR, 2.06; CI, 1.38–3.09). We also found that perceived harmfulness of ART and psychological distress were associated respectively with increased (AOR, 1.95; CI, 1.15–3.32) and decreased (AOR, 0.31; CI, 0.11–0.83) odds of non-adherence to ART.

Conclusion

Food insecurity is prevalent and a significant risk factor for non-adherence to ART among HIV-infected individuals in the DRC. Our findings highlight the urgent need for strategies to improve food access among HIV-infected on ART in order to ensure patient adherence to ART and ultimately the long-term success of HIV treatment in Sub-Saharan Africa.

Food insecurity and HIV clinical outcomes in a longitudinal study of urban homeless and marginally housed HIV-infected individuals

BACKGROUND

Food insecurity is common among HIV-infected individuals and has been associated with poor health. Little longitudinal research has examined the association of food insecurity with HIV clinical outcomes, or the extent to which adherence mediates these associations.

DESIGN

Observational cohort study

METHODS

HIV-infected homeless and marginally housed individuals in the San Francisco Research on Access to Care in the Homeless cohort completed quarterly structured interviews and blood draws. We measured food insecurity using the validated Household Food Insecurity Access Scale. Primary outcomes were: antiretroviral therapy (ART) nonadherence (<90% adherence), incomplete HIV viral load suppression more than 100 copies/ml, and CD4⁺ cell counts less than 200 cells/μl. We estimated model parameters using generalized estimating equations, adjusting for sociodemographic and clinical variables.

RESULTS

From May 2007 to March 2010, we followed 284 participants for a median of 22 months. At baseline 54.6% of participants were food-insecure. Food insecurity was associated with increased odds of ART nonadherence [adjusted odds ratio (AOR) = 1.48; 95% confidence interval (CI), 1.19-1.85], incomplete viral load suppression (AOR = 1.29, 95% CI 1.04-1.61), and CD4⁺ cell counts less than 200 cells/μl (AOR = 1.26, 95% CI 1.01-1.56). When we included ART adherence in adjusted models for incomplete viral suppression and CD4⁺ cell counts less than 200 cells/μl, the magnitude of the effect decreased slightly.

CONCLUSION

Food insecurity was associated with poor HIV outcomes, including nonadherence, in a longitudinal study of US-based HIV-infected unstably housed individuals. Efforts to address food insecurity should be included in HIV-treatment programs, and may help improve health outcomes.

Dietary intakes of HIV-infected adults in urban UK

Maintaining a good nutritional status is important for immune health and for managing metabolic comorbidities in adults with HIV infection. Little is known about the dietary habits of adults living with HIV infection in the United Kingdom. The aims of this study were to characterise their dietary intakes, and to identify subgroups of patients who may require nutritional counselling and/or food support services. An observational study of adults attending a London HIV out-patient clinic who completed a demographics questionnaire and a structured 24 h diet recall interview was conducted. In all, 196 (162 men, 34 women) adults participated. Forty-three percent (n=66) of men and thirty-six percent (n=11) of women did not consume enough energy to meet their basal metabolic requirements and activity factor. The majority of both men (64%) and women (56%) consumed more than the recommended amount of saturated fat. Self-report of lipodystrophy (B coefficient -2.27 (95% CI -3.92 to -0.61), P=0.008) was associated with lower dietary fibre intake/1000 kcal per day, and a more recent diagnosis of HIV (B coefficient -0.11 (95% CI -0.20 to -0.02), P=0.013) was associated with a higher dietary fibre/1000 kcal intake per day. Recreational drug use was associated with a higher overall calorie (P=0.003) and protein (P=0.001) intake than non-usage after adjusting for basal metabolic requirements and weight, respectively. Our data describe the dietary intakes of a diverse group of adults with HIV infection in the United Kingdom. These dietary habits may have an impact on their overall health and development of other metabolic comorbidities common in people with HIV.

Food insecurity and risky sexual behaviors among homeless and marginally housed HIV-infected individuals in San Francisco

Food insecurity is common among HIV-infected populations in resource-rich and resource-poor countries. We hypothesized that food insecurity would be associated with risky sexual behaviors. We examined this hypothesis among all sexually active participants (n = 154) in the Research on Access to Care in the Homeless (REACH) cohort in San Francisco. The outcomes were unprotected vaginal or anal sex and multiple sexual partners during the prior 90 days. Associations were examined using repeated measures multivariable logistic regression analyses. Food insecurity was independently associated with unprotected sexual activity (AOR = 2.01 for each five point increase in HFIAS scale, 95 % CI 1.31-3.10) and multiple sexual partners (AOR = 1.54 for each five-point increase in HFIAS scale, 95 % CI 1.05-2.29). Food insecurity is a risk factor for unprotected sexual activity and multiple sexual partners among homeless and marginally housed HIV-infected individuals in San Francisco. Measures to alleviate food insecurity may play a role in decreasing secondary HIV transmission.

A pilot study examining food insecurity and HIV risk behaviors among individuals recently released from prison

Annually 700,000 individuals are released from U.S. prison, many at risk for food insecurity and HIV. The association between food insecurity and HIV risk behaviors has been established but not in this population. To investigate this association, we recruited 110 recently released prisoners to participate in a survey. Ninety-one percent of our sample was food insecure; 37% did not eat for an entire day in the past month. Those who did not eat for an entire day were more likely to report using alcohol, heroin, or cocaine before sex or exchanging sex for money compared to those who had at least a meal each day. From this pilot study, released prisoners appear to be at risk for food insecurity, and not eating for an entire day is associated with certain HIV risk behaviors. HIV prevention efforts should include longitudinal studies on the relationship between food insecurity and HIV risk behaviors among recently released prisoners.

Poor diet quality is associated with low CD4 count and anemia and predicts mortality among antiretroviral therapy-naive HIV-positive adults in Uganda

BACKGROUND

We assessed the association between dietary diversity and CD4 count, moderate anemia, and mortality among 876 antiretroviral therapy-naive people living with HIV/AIDS infection (PLHIV) in Uganda.

METHODS

Participants were interviewed and followed for an average of 21.6 months. Dietary diversity was measured using the Individual Dietary Diversity Score (IDDS) (range, 0-12) and summarized into an overall measure and disaggregated into nutrient-rich food groups (range, 0-7), cereals, roots, and tubers (range, 0\x{2013} 2); and oils, fats, sugars, and condiments (range, 0\x{2013} 3). We determined the cross-sectional associations between dietary diversity and (1) immunosuppression (CD4 count ≤ 350 cells/μL) and (2) moderate anemia (hemoglobin < 10 g/dL) at baseline with logistic regression. We assessed the association between IDDS and mortality using Cox proportional hazards regression.

RESULTS

The mean IDDS score was 6.3 (SD 1.7) food groups per day, with a mean of 2.7 (SD 1.1) nutrient-rich food groups per day. Each additional nutrient-rich food group consumed was associated with a 16% reduction in the likelihood of having a CD4 count ≤350 cells/μL [adjusted odds ratio, 0.84; 95% confidence interval (CI): 0.72 to 0.97] at baseline. Among those with >350 CD4 cells per microliter, but not those with CD4 count ≤350 cells per microliter, consumption of nutrient-rich food groups was associated with a lower odds of moderate anemia (adjusted odds ratio, 0.57; 95% CI: 0.34 to 0.96). During follow-up, 48 participants (5.6%) died (mortality rate of 3.1 per 100 person-years). IDDS was inversely associated with mortality [adjusted hazard ratio, 0.76; 95% CI: 0.63 to 0.91].

CONCLUSION

These results suggest that diet quality is an important determinant of HIV disease severity and mortality in antiretroviral therapy-naive PLHIV.

Food insecurity is associated with greater acute care utilization among HIV-infected homeless and marginally housed individuals in San Francisco

BACKGROUND

Food insecurity, or the uncertain availability of nutritionally adequate, safe foods, has been associated with poor HIV outcomes. There are few data on the extent to which food insecurity impacts patterns of health-care utilization among HIV-infected individuals.

OBJECTIVE

We examined whether food insecurity was associated with hospitalizations, Emergency Department (ED) visits, and non-ED outpatient visits.

METHODS

HIV-infected, homeless and marginally housed individuals participating in the San Francisco Research on Access to Care in the Homeless (REACH) cohort underwent quarterly structured interviews and blood draws. We measured food insecurity with the validated Household Food Insecurity Access Scale, and categorized participants as food secure, mild/moderately food insecure, and severely food insecure. Primary outcomes were: (1) any hospitalizations, (2) any ED visits, and (3) any non-ED outpatient visits. Generalized estimating equations were used to estimate model parameters, adjusting for socio-demographic (age, sex, ethnicity, education, income, housing status, health insurance) and clinical variables (CD4 nadir, time on antiretroviral therapy, depression, and illicit drug use).

RESULTS

Beginning in November 2007, 347 persons were followed for a median of 2 years. Fifty-six percent of participants were food insecure at enrollment. Compared with food-secure persons, those with severe food insecurity had increased odds of hospitalizations [adjusted odds ratio (AOR) = 2.16, 95 % confidence interval (CI) = 1.50-3.09] and ED visits (AOR = 1.71, 95 % CI = 1.06-2.30). While the odds of an outpatient visit were 41 % higher for severely food insecure individuals, the effect was not statistically significant (AOR = 1.41, 95 % CI = 0.99-2.01). Mild/moderate food insecurity was also associated with increased hospitalizations (AOR = 1.56, 95 % CI = 1.06-2.30), ED visits (AOR = 1.57, 95 % CI = 1.22-2.03), and outpatient visits (AOR = 1.68, 95 % CI = 1.20-2.17).

CONCLUSIONS

Food insecurity is associated with increased health services utilization among homeless and marginally housed HIV-infected individuals in San Francisco. Increased ED visits and hospitalizations are not related to fewer ambulatory care visits among food-insecure individuals. Addressing food insecurity should be a critical component of HIV treatment programs and may reduce reliance on acute care utilization.

Changes in food insecurity, nutritional status, and physical health status after antiretroviral therapy initiation in rural Uganda

OBJECTIVE

To investigate whether time on antiretroviral therapy (ART) is associated with improvements in food security and nutritional status, and the extent to which associations are mediated by improved physical health status.

DESIGN

The Uganda AIDS Rural Treatment Outcomes study, a prospective cohort of HIV-infected adults newly initiating ART in Mbarara, Uganda.

METHODS

Participants initiating ART underwent quarterly structured interview and blood draws. The primary explanatory variable was time on ART, constructed as a set of binary variables for each 3-month period. Outcomes were food insecurity, nutritional status, and PHS. We fit multiple regression models with cluster-correlated robust estimates of variance to account for within-person dependence of observations over time, and analyses were adjusted for clinical and sociodemographic characteristics.

RESULTS

Two hundred twenty-eight ART-naive participants were followed for up to 3 years, and 41% were severely food insecure at baseline. The mean food insecurity score progressively declined (test for linear trend P < 0.0001), beginning with the second quarter (b = -1.6; 95% confidence interval: -2.7 to -0.45) and ending with the final quarter (b = -6.4; 95% confidence interval: -10.3 to -2.5). PHS and nutritional status improved in a linear fashion over study follow-up (P < 0.001). Inclusion of PHS in the regression model attenuated the relationship between ART duration and food security.

CONCLUSIONS

Among HIV-infected individuals in Uganda, food insecurity decreased and nutritional status and PHS improved over time after initiation of ART. Changes in food insecurity were partially explained by improvements in PHS. These data support early initiation of ART in resource-poor settings before decline in functional status to prevent worsening food insecurity and its detrimental effects on HIV treatment outcomes.

Role of antiretroviral therapy in improving food security among patients initiating HIV treatment and care

OBJECTIVE

Although the physical health benefits of HIV antiretroviral therapy (ART) are well documented, the socioeconomic benefits are still being established. Few studies have examined the effects of ART on food insecurity, although studies suggest there may be a benefit via improved health and ability to work.

DESIGN

Twelve-month prospective cohort study of 602 treatment-naive patients initiating clinical care in Uganda.

METHODS

Longitudinal multivariate logistic regression was used to investigate the effect of ART on food insecurity compared to HIV care without ART. A staged regression approach was used to explore pathways through which ART may affect food insecurity.

RESULTS

Food insecurity decreased significantly for both the ART and non-ART groups over time, with the ART group experiencing greater reductions by the end of the study. ART remained a significant predictor of reduction in food insecurity over time after controlling for baseline differences in the regression model (odds ratio 0.642; P < 0.01). Improvements in work and mental health status were identified as potential pathways through which ART may improve food security.

CONCLUSION

Taken together with the well known benefits of food security on ART adherence, treatment retention and clinical outcomes in resource-poor settings, our results suggest that a positive feedback loop of improved functioning and productivity could result from the interaction between food security and ART. Policymakers could leverage this positive cycle by strengthening mental health support and promoting sustainable food security interventions as part of HIV treatment programs.

Food insecurity is associated with morbidity and patterns of healthcare utilization among HIV-infected individuals in a resource-poor setting

OBJECTIVE

We undertook a longitudinal study in rural Uganda to understand the association of food insecurity with morbidity and patterns of healthcare utilization among HIV-infected individuals enrolled in an antiretroviral therapy program.

DESIGN

Longitudinal cohort study.

METHODS

Participants were enrolled from the Uganda AIDS Rural Treatment Outcomes cohort, and underwent quarterly structured interviews and blood draws. The primary predictor was food insecurity measured by the validated Household Food Insecurity Access Scale. Primary outcomes included health-related quality of life measured by the validated Medical Outcomes Study-HIV Physical Health Summary (PHS), incident self-reported opportunistic infections, number of hospitalizations, and missed clinic visits. To estimate model parameters, we used the method of generalized estimating equations, adjusting for sociodemographic and clinical variables. Explanatory variables were lagged by 3 months to strengthen causal interpretations.

RESULTS

Beginning in May 2007, 458 persons were followed for a median of 2.07 years, and 40% were severely food insecure at baseline. Severe food insecurity was associated with worse PHS, opportunistic infections, and increased hospitalizations (results were similar in concurrent and lagged models). Mild/moderate food insecurity was associated with missed clinic visits in concurrent models, whereas in lagged models, severe food insecurity was associated with reduced odds of missed clinic visits.

CONCLUSION

Based on the negative impact of food insecurity on morbidity and patterns of healthcare utilization among HIV-infected individuals, policies and programs that address food insecurity should be a critical component of HIV treatment programs worldwide.