Health Index. Ukraine: 2016-2023 – Data from six waves of nationwide representative surveys among Ukraine's adult population

"Health Index. Ukraine" is a large-scale, empirical, and representative study aimed at collecting quantitative data on the population's health-related knowledge and behaviors, as well as their evaluations of healthcare service quality based on personal experiences, and tracking changes in these indicators over time. Launched in 2016, the study has been conducted annually until 2020, with five waves completed during the 2016-2020 period, and resumed in 2023, offering the opportunity to reassess key health-related issues and access to medical services amid the challenges posed by the full-scale war. The study was initiated by the International Renaissance Foundation, with the Charitable Foundation "Health Solutions for Open Society" continuing its legacy as the successor to the Public Health program. The Kyiv International Institute of Sociology (KIIS) has served as the executing agency for the study across all years. Key partners and donors of the project also include the World Bank (2017), the Ministry of Health of Ukraine (2018, 2019, 2020, 2023), and the World Health Organization (2023). The data for this study come from sociological surveys of the adult population, with approximately 10,000 respondents participating in each wave. The sample for each wave is random and representative of the adult population (18 years and older) of Ukraine as a whole, as well as of each oblast covered by the study, including the city of Kyiv. The topics covered by the study include health and health-seeking behaviour, early disease detection, patient experiences with outpatient and inpatient care (including questions on official and unofficial expenses), general perceptions of vaccination and specific behaviours related to child immunization, medication availability, satisfaction with medical care, and perceptions of healthcare reforms. The data collection includes datasets, field questionnaires, and technical reports describing the methodology for all six survey waves. Each dataset is provided as a separate file in SAV format and labeled in Ukrainian. Additionally, the collection includes converted datasets in CSV format, accompanied by codebooks. The study results, including comprehensive analytical reports and selected infographics, are available on the project website: https://healthindex.com.ua/