INS and diabetes mellitus: Among patients who purchased blood glucose meters, the percentages for the following variables were lower than those who did not purchase blood glucose meters (Table 1): educational level of primary school or below, P = 0.001; being a farmer, P < 0.01; no use of insulin therapy, P = 0.001; no previous episodes of hypoglycemia P = 0.003; no chronic complications of diabetes, P = 0.013; no understanding of blood glucose control goals, P = 0.013; and no understanding of SMBG, P < 0.01.