Health analytics is a branch of analysis that focuses on the analysis of complex and large amounts of health data that are characterized by high dimensionality, irregularities and rarities. Their aim is to improve and increase the efficiency of the process of healthcare providers, working with patients, managing costs and resources, improve diagnostic procedures and treatments, etc. The prime focus is investigating historical data and finding templates for different scenarios. As a final product, usually different visualisation tools are produced to support practitioners in patient care to provide better services, and to improve existing procedures.