Patients were grouped into one of three groups, defined by SOC date and telehealth use (see Table 1). A baseline group (Group 1) was established to determine the agency's base rate for ACH and ED visits in the year before implementation of telemonitoring and also if a temporal trend in patient characteristics occurred. Group 2 served as the control group as telemonitoring was available but not implemented for these patients. Patients in Group 3 received telemonitoring.