University of Dodoma | Tanzania
Dr. Amon Exavery is a distinguished statistician and epidemiologist whose research integrates advanced statistical modeling with population health studies to address pressing public health challenges in Tanzania and sub-Saharan Africa. His scholarly contributions span topics such as child and maternal health, HIV/AIDS prevention, household food security, and socioeconomic determinants of well-being. Through the application of multivariate and multilevel statistical methods, he has provided evidence-based insights into issues like early childbearing, breastfeeding practices, and healthcare access. His notable publications in leading international journals, including PLOS ONE, AIDS Research and Therapy, and the International Breastfeeding Journal, highlight his methodological rigor and commitment to data-driven policy solutions. Dr. Exavery’s recent work focuses on mixed-effects ordinal logistic regression and difference-in-differences estimators to evaluate community interventions, such as the WORTH Yetu program, aimed at improving household resilience and caregiver welfare. His interdisciplinary approach bridges statistical innovation and field epidemiology, contributing significantly to the understanding of health disparities, reproductive behavior, and social determinants of disease outcomes. Through his extensive research and evidence-based analyses, Dr. Exavery continues to advance the role of biostatistics and epidemiology in promoting equitable, sustainable health interventions across developing regions.
Profile : Orcid
Featured Publications
Exavery, A., Kirigiti, P. J., Balan, R. T., & Charles, J. (2026, February). Enhancing longitudinal impact evaluation of non-experimental interventions: A comparative analysis of generalized estimating equations and multilevel models based on empirical evaluation of temporal change in food security following an economic empowerment intervention. Evaluation and Program Planning.
Exavery, A., Kirigiti, P. J., Balan, R. T., & Charles, J. (2025). Determinants of participation in WORTH Yetu economic empowerment intervention among caregivers of orphaned and vulnerable children in Tanzania: A longitudinal multivariable logistic regression analysis. Social Sciences & Humanities Open.
Exavery, A., Kirigiti, P. J., Balan, R. T., & Charles, J. (2024, August). Longitudinal evaluation of the influence of WORTH Yetu on household economic status based on the count of non-asset resources for orphaned and vulnerable children’s well-being in Tanzania. Child Indicators Research.
Exavery, A., Katbi, M., Kirigiti, P. J., Balan, R. T., & Charles, J. (2024, April 16). Multivariate mixed-effects ordinal logistic regression models with difference-in-differences estimator of the impact of WORTH Yetu on household hunger and socioeconomic status among OVC caregivers in Tanzania. PLOS ONE.
Exavery, A., Alam, K., Charles, J., Barankena, A., Bajaria, S., Minja, E., Mulikuza, J., Mbwambo, T., Ally, A., Mseya, R., et al. (2022, February 25). Impact of household economic strengthening intervention on food security among caregivers of orphans and vulnerable children in Tanzania. PLOS ONE. 21, December). Accelerating caregivers’ HIV status disclosure to community-based lay social welfare volunteers in Tanzania. AIDS Research and Therapy.
Exavery, A., Charles, J., Barankena, A., Kuhlik, E., Mubyazi, G. M., Tani, K., Ally, A., Minja, E., Koler, A., Kikoyo, L., et al. (2020, December). ART use and associated factors among HIV positive caregivers of orphans and vulnerable children in Tanzania. BMC Public Health.
Charles, J., Exavery, A., Barankena, A., Kuhlik, E., Mubyazi, G. M., Abdul, R., Koler, A., Kikoyo, L., & Jere, E. (2020, December). Determinants of undisclosed HIV status to a community-based HIV program: Findings from caregivers of orphans and vulnerable children in Tanzania. AIDS Research and Therapy.
Bajaria, S., Exavery, A., Toroka, N., Barankena, A., Charles, J., Kikoyo, L., & Kassaye, S. (2020, December 27). Factors associated with HIV status disclosure to orphans and vulnerable children living with HIV: Results from a longitudinal study in Tanzania. AIDS Research and Treatment.
Bajaria, S., Marotta, C., Abdul, R., Exavery, A., Minja, E., Charles, J., Mtenga, S., Jere, E., & Geubbels, E. (2020, September 18). Programmatic determinants of successful referral to health and social services for orphans and vulnerable children: A longitudinal study in Tanzania. PLOS ONE.
Exavery, A., Charles, J., Kuhlik, E., Barankena, A., Ally, A., Mbwambo, T., Kyaruzi, C., Mubyazi, G. M., Kikoyo, L., & Jere, E. (2020, July). Correlates of uptake of antiretroviral therapy in HIV-positive orphans and vulnerable children aged 0–14 years in Tanzania. HIV/AIDS – Research and Palliative Care.
Exavery, A., Charles, J., Kuhlik, E., Barankena, A., Mubyazi, G. M., Kikoyo, L., & Jere, E. (2020, July). Relationship between food insufficiency and HIV infection among caregivers of orphans and vulnerable children in Tanzania. HIV/AIDS – Research and Palliative Care.
Exavery, A., Charles, J., Kuhlik, E., Barankena, A., Koler, A., Kikoyo, L., & Jere, E. (2020, February 28). Understanding the association between caregiver sex and HIV infection among orphans and vulnerable children in Tanzania: Learning from the USAID Kizazi Kipya Project. Preprint.
Exavery, A., Charles, J., Kuhlik, E., Barankena, A., Koler, A., Kikoyo, L., & Jere, E. (2020, February 5). Is caregiver sex associated with HIV infection among orphans and vulnerable children in Tanzania? Learning from the USAID Kizazi Kipya Project. Preprint.
Exavery, A., Charles, J., Kuhlik, E., Barankena, A., Koler, A., Kikoyo, L., & Jere, E. (2019, September 12). Closing the pediatric gap in the first 90: Is caregiver sex associated with HIV status of orphans and vulnerable children? Learning from the USAID Kizazi Kipya Project in Tanzania. Preprint.