RESEARCH DESIGN AND METHODS— A Department of Veterans Affairs regional
database was used to identify patients with diabetes on chronic insulin therapy (n6,222) with
dose defined as number of units and doses. The rate of insulin use during a 2-year period was
calculated using pharmacy data. Regression analyses were used 1) to predict compliance with
prescribed insulin regimens using demographic variables, HbA1c levels, and a measure of dia-
betesmanagement intensity and 2) to predictHbA1c levels using demographic variables and rates
of insulin use