Coverage index for essential health services (based on tracer interventions that include reproductive, maternal, newborn and child health, infectious diseases, noncommunicable diseases and service capacity and access). It is presented on a scale of 0 to 100. Development relevance: Universal Health Coverage (UHC) is about ensuring that all people can access the health services they need without facing financial hardship. It is key to improving the well-being of a country’s population. UHC is also an investment in human capital and a foundational driver of inclusive and sustainable economic growth and development. UHC is a target associated with the Sustainable Development Goals (target 3.8), and it relates directly to Goal 3 (Ensure healthy lives and promote well-being for all at all ages) and to Goal 1 (End poverty in all its forms everywhere). Statistical concept and methodology: The Service Coverage Index used to track SDG 3.8.1 includes four indicator categories, namely (1) reproductive, manternal and newborn and child health, (2) infectious diseases, (3) non-communicable diseases and (4) service capacity and access. Each category contains several tracers. The index is constructed from geometric means of the tracer indicators; first, within each of the four categories, and then across the four category-specific means to obtain the final summary index. See Source for details about methodology.