We're very pleased to report that we've been given the opportunity by the U.S. National Institutes of Health to continue our work on HIV treatment adherence in Tanzania in collaboration with Health for a Prosperous Nation, the Ministry of Health, Community Development, Gender, Elderly, and Children, and Management and Development for Health. Over the next 5 years, we'll optimize the size and delivery of a short-term cash transfer and test its effectiveness for reducing HIV viral load in a cluster randomized trial. We'll use an innovative biometric delivery model linked to SMS and mobile banking developed by the communications firm Rasello. Read more about the new project here.
This week our team traveled to Paris for the 9th International AIDS Society Conference on HIV Science where we presented our latest research findings. Doctoral student Carolyn Fahey presented her work on the effects of short-term cash and food assistance on food insecurity and labor force participation among HIV-infected adults in Tanzania (watch her presentation here and see her abstract #TUAD0204 in the abstract book). Recent MPH graduate Jillian Kadota presented an analysis that found that cash transfers do not increase the use of temptation goods like alcohol, a reassuring finding consistent with prior literature on cash transfers. She also presented an analysis which found that cash and food transfers work the best among those who were recently initiated on antiretroviral therapy and among the poorest patients, which may be related to the cost of transportation to the clinic. These data can be used to better design future cash transfer programs for people living with HIV infection in Tanzania and elsewhere. Lastly, we presented the results of our study that used human-centered design to develop an intervention using social norms and priming to improve adherence to antiretroviral therapy and retention in care among adults with HIV in Tanzania (watch the presentation here and read about the full study in PLoS One). We also published a two-part series on this study in the Stanford Social Innovation Review (see Part I and Part II). A very successful week for our research team and we are enthusiastic about incorporating the new ideas and perspectives we learned in Paris into our future work.
Two of our former UC Berkeley students recently published new findings that describe how people in Tanzania use the incentives they receive in exchange for engaging in beneficial health behaviors. In a qualitative study led by Dr. Nancy Czaicki and published in AIDS Care, our team found that people living with HIV who received monthly cash or food assistance when they visited the HIV clinic reported myriad beneficial effects on household welfare. Participants reported that incentives were predominantly used for food, school fees, and investing in businesses. There were no reports of harmful events associated with the incentives. In a second qualitative study published in Social Science & Medicine, Dr. Jan Cooper examined how female sex workers in Dar es Salaam changed their behavior in order to receive a cash transfer conditional on staying free of sexually transmitted infections. Although many of the women had limited ability to insist on condom use with sexual partners, they reported substantial power over their work logistics, such as reducing the number of workdays and clients, that they leveraged to meet the conditions of the incentive program. This is an important new finding that adds to what we know about how incentives help women achieve health goals. Together, these studies add to the growing evidence base about the benefits of cash and other kinds of incentives for improving health and welfare in sub-Saharan Africa.
Our team is thrilled to announce the results of our randomized trial comparing the effectiveness of conditional cash and food transfers to improve adherence to antiretroviral therapy and retention in HIV care among adults in Tanzania. The study found that both food assistance and cash transfers increased adherence to treatment and reduced loss to follow-up, although cash transfers were more effective than food assistance after the incentive period was over. We also found that cash transfers cost less than food transfers, are easier to implement, and are often preferred by patients. The presentation at AIDS 2016 (Durban, South Africa) can be viewed here and the results are available starting January 2017 in the journal AIDS. The study was a collaboration between UC Berkeley, the Shinyanga Regional Medical Office, and the Ministry of Health, Community Development, Gender, Elderly, and Children. It was funded by the U.S. National Institutes of Health.
I was very honored to participate in the 2015 UC Berkeley Center for Global Public Health Annual Symposium entitled “Making Cents, Making Change.” The one day workshop focused on economic innovations for adolescent health and wellbeing. The distinguished guest list included Fred Ssewamala, Associate Professor of Social Work and Director of the Columbia University International Center for Child Health and Asset Development, Dr. Lousie Fox, former Lead Economist at the World Bank (Africa Region), and UC Berkeley faculty members Dr. Ndola Prata, Dr. Doug Jutte, Dr. Ali Minnis, and Dr. Colette (Coco) Auerswald. One of the key discussions during the day addressed whether economic interventions are most likely to be effective and sustainable when delivered at the individual, community, or policy level.
A great World Bank blog post by Senior Economist David Evans on whether cash transfers given to the poor are wasted on alcohol and cigarettes. After reviewing 44 estimates of spending on alcohol and tobacco from 19 studies and 13 interventions (including Oportunidades/PROGRESA), David finds that the vast majority of estimates (82%) are negative. He concludes: "We should stop worrying that the poor are going to spend (or “waste”) their transfer income on alcohol and tobacco. They aren’t." This is good news for those of us interested in the overwhelmingly positive effects of cash transfers on health and welfare, including their potential for HIV prevention. However, this analysis was limited to alcohol and tobacco expenditures among households who were beneficiaries of government-run anti-poverty programs. In the HIV/AIDS realm, a study by Kohler and Thornton (2012) found that Malawian men given cash transfers were more likely to engage in risky sex shortly after receiving the transfer, although this finding has luckily not been replicated in other studies.
Suneetha Kadiyala, a Senior Lecturer at the London School of Hygiene & Tropical Medicine, and Rahul Rawat, a Research Fellow at the International Food Policy Research Institute (IFPRI), describe the dangerous interaction between food insecurity and HIV/AIDS in this excellent Scientific American article. Suneetha and Rahul highlight their research on food insecurity among people living with HIV infection in Uganda, including an analysis we conducted demonstrating that poor diet quality is associated with low CD4 count and predicts mortality among antiretroviral therapy-naive HIV-positive adults. They also argue for livelihood programs which have the potential to sustainably support care and treatment programs and mitigate the negative household and community-level impacts of HIV/AIDS.