This Book describes the utilization of data collected at community level using community based health information system by various stakeholders and its effectiveness in decision making. A Community based health Information System (CBHIS) is a type of health information system that is based in the rural community and informal settlements of urban areas. Its objective is to produce relevant and quality information to support decision making. The CBHIS should hence strive to complement the functions of a health system which include: Improving decision-making, improving service delivery to the population and subsequently Impacting positively on the health outcomes of the target population at different levels of the health system.Health systems performance would be enhanced not only by bridging the interface between the community and the health system but also encouraging timely decision making and action based on available information.