 Participants were examined using the methods reported previous. All chemical laboratory data were obtained at each clinic visit in the morning in a non-fasting state. A single specimen at each visit was used to assess urinary albumin levels based on the 2009 guidelines of the ADA. CBP was measured once in each clinic visit. HBP was measured every day in the morning within 10 minutes after awakening in the sitting position, but HBP value assessed for this study used the value measured once in the same morning at each clinic visit. 