Diabetes mellitus is one of the major public health problems worldwide. With the aging of the population, improvements in living standards, and changes in lifestyle, the prevalence of the disease is growing rapidly. There have been many studies regarding high prevalence of diabetes and diabetes complication among patients admitted to Internal Medicine Wards and costs for diabetic patients, both in North America and Europe. Most have shown that the medical costs of diabetes are responsible for a very high proportion of total healthcare expenditure, with the proportion of costs increasing year by year [1,2].
