Service utilization refers to the extent to which individuals or populations access and use various health, social, or community services. This research area focuses on understanding the factors that influence people's use of services, including their needs, preferences, barriers to access, and the availability and quality of services. Researchers in this field may examine patterns of service utilization, disparities in access to services, and the effectiveness of interventions in promoting service use. The goal of research in service utilization is to improve access to needed services and ultimately improve health and well-being outcomes for individuals and communities.