Figure 2. Number of root caries events based on serum albumin concentrations after 6 yrs. Subjects with serum albumin concentrations > 4.0 g/dL at baseline and with serum albumin concentrations 4.0 g/dL after 6 yrs: n = 52. Subjects with serum albumin concentrations > 4.0 g/dL at baseline and with serum albumin concentrations > 4.0 g/dL after 6 yrs: n = 180. Subjects with serum albumin concentrations 4.0 g/dL at baseline and with serum albumin concentrations 4.0 g/dL after 6 yrs: n = 20. Subjects with serum albumin concentrations 4.0 g/dL at baseline and with serum albumin concentrations > 4.0 g/dL after 6 yrs: n = 14.