Johns Hopkins Bloomberg School Of Public Health

This study tests a program called Project YES+ for youth aged 15-21 living with HIV in Zambia. The program combines peer mentoring with mental health support to reduce stigma, violence, and depression. Researchers will enroll 400 participants to see if the program is feasible and…

This study tested a culturally tailored program called Together Overcoming Diabetes (TOD) for American Indian families in Ojibwe communities. Adult caregivers with type 2 diabetes and their youth (ages 10-16) worked with local health coaches to set health goals. The program inclu…

This study tested whether a combination of topical antibiotics and antiseptic washes could reduce staph bacteria on the skin of Native American adults living on or near tribal lands. Participants were at high risk for staph infections due to diabetes, obesity, or recent infection…

This study tested whether giving pregnant women a balanced energy and protein supplement (BEP) can improve birth weight and reduce complications like low birth weight and preterm birth. Over 3,300 women in Bangladesh were randomly assigned to receive either BEP or standard prenat…

This study tested whether cleaning therapy dogs with a special disinfectant (chlorhexidine) before hospital visits could reduce the spread of harmful germs to children. The trial involved 45 children aged 3 to 17 who interacted with therapy dogs. Researchers checked if the cleani…

This study tested a data-to-care approach to reconnect people living with HIV in Ukraine who had fallen out of care. Researchers used health records to identify 160 participants and help them re-engage in HIV care, start or restart antiretroviral therapy, and achieve viral suppre…

This study tested different combinations of three programs—New Hope (coping skills), Elders Resilience (cultural strength), and Case Management—to see which best reduces suicidal thoughts and builds resilience in American Indian youth ages 10-29. The 304 participants were identif…

This study tested a mobile app that helps small corner stores in low-income Baltimore neighborhoods order and sell more healthy foods like fruits and vegetables. About 310 stores and customers took part. The goal was to see if the app could make healthier options more available a…

This study tested two nurse-led programs to help women living with HIV in Durban, South Africa, stay in care and keep the virus under control. One program provided HIV treatment through a mobile van, and the other offered personalized support from a peer. The goal was to see whic…

This study tested whether training people on methadone to become peer educators could help their friends who inject drugs and have HIV get into treatment. The peer educators talked to their social network members about medication for drug dependence and accompanied them to the cl…

This completed study tested a program called Family Connections for HIV-positive youth aged 15-21 and their caregivers in Zambia. The goal was to help teens achieve an undetectable viral load and reduce self-stigma through group sessions. Over 1,300 participants took part, and th…

This completed trial in South Africa tested four support strategies—case management, food vouchers, peer buddies, and community PrEP pick-up points—to help female sex workers and young women stay on PrEP, a daily pill that prevents HIV. 304 participants were randomly assigned to …

This completed study tested a van-based program in Baltimore that offered drug checking and HIV prevention medication (PrEP) to people who use drugs. Nearly 500 participants were recruited to see if the program helped them start or stay on PrEP and reduce risky behaviors. The goa…

This study in Nigeria looked at whether offering extra health services for teens—like counseling, vision checks, and deworming—alongside the usual government programs could get more 9-year-old girls vaccinated against HPV. Over 12,000 people took part, and researchers compared ar…

This study tested a special toolkit designed to help African American women at risk for HIV get access to PrEP (a daily pill that prevents HIV). The toolkit also addresses intimate partner violence, which can make it harder for women to seek prevention. Researchers worked with tw…

This study tested a free online self-help course called Help Wanted for men who are sexually attracted to children but have never acted on it. The goal was to give them skills and resources to keep children safe and improve their own well-being. 147 men participated, completing s…

This study tested two culturally tailored programs to encourage breast cancer screening among 323 White Mountain Apache women. One group received a culturally relevant education module (CARE), while the other also got access to an Apache women's health coach. The main goal was to…

This study looked at whether home safety assessments and modifications could reduce injury risks for children under 7 in low-income households. Researchers visited 300 homes, identified hazards like unlocked poisons, missing smoke alarms, and unsecured furniture, then provided fi…

This completed trial in Somalia tested whether giving families cash transfers, with or without extra nutrition education and additional cash, could prevent malnutrition in children and mothers. Over 3,300 families received monthly mobile cash for 6 months. Researchers measured wa…

This study tests whether a school-based digital wellbeing program can help Saudi high school students use technology more responsibly. About 2,500 students from 20 schools will either get the standard curriculum or an enhanced version with parent involvement. Researchers will mea…

This study tests new tools to help pregnant women in Ethiopia get more prenatal checkups, take iron pills, and give birth in a health facility. About 1,024 pregnant women who are at least 5 months along and have moderate to high vulnerability will take part. Researchers will see …

This study tested whether adding a warning label to ultra-processed foods (like sugary yogurts) changes what people say they would buy. Over 7,000 U.S. adults viewed mock food packages online with or without a warning label. Researchers measured purchase intent and how healthy pe…

This completed study tested whether adding environmental harm labels to fast-food menu items influences the healthfulness of people's meal choices. Over 7,000 U.S. adults completed an online survey where they ordered meals from two fast-food restaurants, with menus showing either…

This study looked at nearly 10,000 patients to see if combining information from clinical trials and electronic health records can help predict which depression medication works best for each person. Researchers analyzed data from people prescribed duloxetine or vortioxetine. The…

This study tested a program called the Bullying Classroom Check-Up (BCCU) that coaches 3rd-5th grade teachers to better detect and handle bullying. Researchers worked with 34 teachers in urban schools to see if the coaching reduces aggressive behavior and improves school climate.…

This study looked at how different marketing messages about tobacco-free nicotine pouches affect what people think about them. Over 5,000 participants in the US, including smokers and young non-users, answered survey questions after seeing ads. The goal was to understand how word…

This study looked at how people understand different food labels that show how sustainable or environmentally harmful a menu item is. Over 14,000 adults in the U.S. were shown a fast-food menu with one of seven label designs and asked about their reactions and buying intentions. …

This completed pilot study tested whether adding climate-impact labels to fast-food menus influences the healthfulness of people's meal choices. Over 6,600 adults in the U.S. completed a hypothetical online ordering task, viewing menus with different label designs. The goal was t…

This completed study looked at whether using adult day services helps reduce stress in Black caregivers of family members with dementia. Forty-two caregivers provided saliva samples and filled out stress surveys on days when their loved one used adult day services and on days the…

This study looked at over 3,300 households in Ethiopia to see which combination of food and nutrition programs works best. Families received different types of support, like savings groups, nutrition classes, or farming help. Researchers measured changes in food security, diet qu…

This study looked at how people understand and react to different labels on ultra-processed foods, like those found on fast-food menus. Over 14,000 adults in the U.S. viewed a menu with one of sixteen label designs and answered questions about their reactions and purchase intenti…

This study tested a web-based app called myPlanKenya that helps women in Nairobi who are at risk of intimate partner violence. Researchers gave the app to 440 women and tracked changes in their safety, resilience, and ability to make decisions. The goal was to see if the app help…

This study tested a program that brings in family and friends to support people receiving methadone treatment for opioid use disorder in Tanzania. The goal was to see if this social support approach is acceptable and practical, and whether it helps people stick to their methadone…

This study tested a program called Asdzáán Be'eená (Female Pathways) for Navajo girls ages 10-14 and their female caregivers. The goal was to see if the program improves communication, monitoring, and teens' plans to delay sex and avoid substance use. About 408 pairs took part, a…