A method, performed by a host computing device , of analyzing continuous analyte sensor data associated with a host , wherein the continuous analyte sensor data is representative of glucose levels of the host , the method comprising: accessing a plurality of glucose readings associated with a host during two or more analysis time periods, wherein each glucose reading is indicative of a glucose level of the host at a respective time; comparing glucose readings associated with the host during a first analysis time period and a second analysis time period of the two or more analysis time periods; and generating a performance report indicating a relationship between the plurality of glucose readings of the two or more analysis time periods, wherein the performance report is indicative of glucose variability by the host over the first and second analysis time periods as a calculated Glycemic Variability Index, GVI, wherein the GVI indicates a quality of glucose control over time based on the continuous analyte sensor data, wherein the GVI includes a total GVI component, GVI total , a hyperglycemia GVI component, GVI hyper and a hypoglycemia GVI component, GVI hypo , wherein the GVI hyper component is indicative of hyperglycemia control based entirely or substantially in part on a time and magnitude of glucose readings that exceed an upper threshold of a predetermined range, the upper threshold being a hyperglycemia threshold, and wherein the GVI hypo component is indicative of hypoglycemia control based entirely or substantially in part on a time and magnitude of glucose readings that fall below a lower threshold of the predetermined range, the lower threshold being a hypoglycemia threshold. accessing a plurality of glucose readings associated with a host during two or more analysis time periods, wherein each glucose reading is indicative of a glucose level of the host at a respective time; comparing glucose readings associated with the host during a first analysis time period and a second analysis time period of the two or more analysis time periods; and generating a performance report indicating a relationship between the plurality of glucose readings of the two or more analysis time periods, wherein the performance report is indicative of glucose variability by the host over the first and second analysis time periods as a calculated Glycemic Variability Index, GVI, wherein the GVI indicates a quality of glucose control over time based on the continuous analyte sensor data, wherein the GVI includes a total GVI component, GVI total , a hyperglycemia GVI component, GVI hyper and a hypoglycemia GVI component, GVI hypo , wherein the GVI hyper component is indicative of hyperglycemia control based entirely or substantially in part on a time and magnitude of glucose readings that exceed an upper threshold of a predetermined range, the upper threshold being a hyperglycemia threshold, and wherein the GVI hypo component is indicative of hypoglycemia control based entirely or substantially in part on a time and magnitude of glucose readings that fall below a lower threshold of the predetermined range, the lower threshold being a hypoglycemia threshold. <EOS>