Books and Monographs

1.       Bellows B, Behl R, Abuya T, Muriuki A, Bajracharya A, Choi Y. Chapter 12: Benchmarking to assess quality of family planning services: Construction and use of indices for family planning readiness in Kenya with data from 2010 and 2014. In: Leisher SH, Sprockett A, Longfield K, and Montagu D. Quality Measurement in Family Planning: Past, Present, Future: Papers from the Bellagio Meeting on Family Planning Quality in October 2015. Oakland, CA: Metrics for Management. 2016 Oct 

2.       Choi Y. Chapter 4: Demographic transition in sub-Saharan Africa: Implications for demographic dividend. In: Chande RH, Pace R. Demographic Dividend: Emerging challenges and policy implications. Springer. 2016 Aug 

Technical Reports

1.       Contributed to: World Health Organization. Patient-reported experiences in primary care patient questionnaire: Module from the WHO health system performance assessment toolkit. Forthcoming  

2.       Contributed to: World Health Organization. Implementing the patient-reported experiences in primary care patient questionnaire: Guidance for a module from the WHO health system performance assessment toolkit. Forthcoming  

3.       Contributed to: World Health Organization. Implementation guidance for assessments of frontline service readiness. Strengthening real-time monitoring of health services in the context of the COVID-19 pandemic. Jul 2021. World Health Organization. WHO reference number: WHO/2019-nCoV/HCF_assessment/Frontline_services/2021.1

4.       Contributed to: World Health Organization. COVID-19 case management capacities: diagnostics, therapeutics, vaccine readiness, and other health products – facility assessment tool: a module from the suite of health service capacity assessments in the context of the COVID-19 pandemic. Jul 2021. World Health Organization. WHO reference number: WHO/2019-nCoV/HCF_assessment/Products/2021.1

5.       Contributed to: World Health Organization. Continuity of essential health services: Facility assessment tool. A module from the suite of health service capacity assessment in the context of the COVID-19 pandemic. Interim Guidance. May 2021. World Health Organization. WHO reference number: WHO/2019-nCoV/HCF_assessment/EHS/2021.1

6.       Contributed to: World Health Organization. Community needs, perceptions and demand: community assessment tool: A module from the suite of health service capacity assessment in the context of the COVID-19 pandemic. Interim Guidance. Feb 2021. World Health Organization. WHO reference number: WHO/2019-nCoV/vaccination/community_assessment/tool/2021.1

7.       Choi Y, Safi S, Nobili J, PMA2020 Principal Investigators Group, Radloff S.  Levels, trends, and patterns of contraceptive method availability: Comparative analyses in eight sub-Saharan African countries.  Mar 2019. Performance Monitoring and Accountability 2020 Methodological Report No. 5. Baltimore, Maryland, USA: Bill & Melinda Gates Institute for Population and Reproductive Health, Johns Hopkins University Bloomberg School of Public Health. 

8.       Greenleaf A, Aliou G, Turke S, Battle N, Ahmed S, Moreau C, Guiella G, Choi Y.  Comparison of remote data collection modes to monitor family planning progress in Burkina Faso: Representativeness, data quality, and cost.  Feb 2019. Performance Monitoring and Accountability 2020 Technical Report. Baltimore, Maryland, USA: Bill & Melinda Gates Institute for Population and Reproductive Health, Johns Hopkins Bloomberg School of Public Health. 

9.       Roemer M, Voegtline K, Strobino D, Choi Y. Method awareness questions and women’s report for modern method use in surveys.  Performance Monitoring and Accountability 2020 Methodological Report No. 4. Baltimore, Maryland, USA: Bill & Melinda Gates Institute for Population and Reproductive Health, Johns Hopkins University Bloomberg School of Public Health.  

10.    Khanna A, Choi Y, Zimmerman L, Radloff S, Zachary B, Ahmad D. Women’s reporting of current use of contraceptive methods in a population with high sterilization rates: Lessons learned from PMA2020 Rajasthan 2016. Aug 2017. Performance Monitoring and Accountability 2020 Methodological Report No. 3. Baltimore, Maryland, USA: Bill & Melinda Gates Institute for Population and Reproductive Health, Johns Hopkins University Bloomberg School of Public Health, and Indian Institute of Health Management Research (IIHMR University). 

11.    Choi Y, Li Q, Zachary B. Fertility data in Performance Monitoring and Accountability 2020 surveys. Aug 2017. Performance Monitoring and Accountability 2020 Methodological Report No. 2. Baltimore, Maryland, USA: Bill & Melinda Gates Institute for Population and Reproductive Health, Johns Hopkins University Bloomberg School of Public Health.  

12.    Hill K, Stanton C, Levin M, Queiroz B, Choi Y, Mahani W, AbouZahr C. Measuring Maternal Mortality from a Census: Guidelines for Potential Users, 2nd Revision 2009. Dec 2009. (Technical report for the Health Metrics Network, WHO for “WHO guidance for measuring maternal mortality from a census” 2013 World Health Organization, Geneva) 

13.    Choi Y, Friedman J, Heywood P, Kosen S. Forecasting health care demand in a middle income country: disease transitions in East and Central Java, Indonesia. 2007. World Bank Research Working Paper. The International Bank for Reconstruction and Development, World Bank. Washington, DC 

14.    Friedman J, Heywood P, Marks G, Saadah F, Choi Y. Health sector decentralization and Indonesia's nutrition programs : opportunities and challenges. January 20, 2006. World Bank Policy Research Working Paper No. 39690. The International Bank for Reconstruction and Development, World Bank. Washington, DC 

15.    Stanton C, Hill K, Choi Y, AbouZahr C, Wardlaw T.  Trends in process and outcome measures of maternal health in developing countries.  Johns Hopkins University, Aug 2003 (Technical report for WHO and UNICEF)

16.    Hill K, Choi Y. Neonatal Mortality in the Developing World.  Johns Hopkins University, May 2003 (Technical report for the Child Health Epidemiology Reference Group, WHO)

17.    Hill K, Choi Y, AbouZahr C, Wardlaw T. Estimates of Maternal Mortality for 2000.  Johns Hopkins University, Jul 2002.  (Technical report for WHO and UNICEF for “Maternal Mortality in 2000: Estimates Developed by WHO, UNICEF, and UNFPA” 2004 World Health Organization, Geneva) 

Working Papers and Pre Prints

1.     Choi Y. Experience of shock and dietary diversity among young children and their mothers in North Kivu, DRC: results from panel data analysis. Jan 2025. Technical report submitted to MOMENTUM Integrated Health Resilience.

2.   Choi Y. Understanding changes in service readiness over time with health facility panel data, using PMA Ethiopia Service Delivery Point Surveys 2019-2022. May 2024. Technical report submitted to PMA Ethiopia.

3.       Riese S, Dunia G, Leazer S, Marchena C, Mourssa H, Semenow G, Choi Y, Malick L. Improved family planning service quality of care data for low- and middle-income countries. 2023 Apr

4.   Choi Y, Karp C, Gummerson E, Anglewicz P. Women’s reported satisfaction and quality of care at family planning visits: Levels, patterns, and correlates from client exit interview data in five countries. 2021 Nov

Working Papers and Pre Prints

5.   Fabic MS, Choi Y, Bishai D. Deaths among COVID Cases in the United States: Racial and Ethnic Disparities Persist. medRxiv 2020.11.15.20232066

6.   Pathak I, Choi Y, Jiao D, Yeung D, Liu L. Racial-ethnic disparities in case fatality ratio narrowed after age standardization: A call for race-ethnicity-specific age distributions in State COVID-19 data. medRxiv 2020.10.01.20205377

7.   Fabic MS, Choi Y. Trends in age distribution of COVID-19 cases, hospitalizations, and deaths by race in the United States. SocArXiv, 2020 Aug 13

8.    Choi Y. Disparity in fertility transition and education, and implications for demographic dividend: analysis of Demographic and Health Surveys from 31 sub-Saharan Africa countries. 2015 Nov